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2588 Cards in this Set

  • Front
  • Back
Long bone
Typically longer than they are wide .
Short bones
Generally cube-shaped and contain mostly spongy bone.
Flat bones
Thin , flattened , and usually curved .
Irregular bones
Bones that do not fit one of the preceding categories
Diaphysis
Or shaft , makes up most of the bone's length and is composed of compact bone .
Epiphyses
The ends of the long bone .
Sharpey's fibers
Hundreds of connective tissue fibers , secure the periosteum to the underlying bone.
Compact bone
Dense and looks smooth and homogeneous.
Compact bone
Dense and looks smooth and homogeneous.
Spongy bone
Composed of small needle like pieces of bone and lots of open space.
Yellow marrow
Storage area for adipose (fat) tissue.
Yellow marrow
Storage area for adipose (fat) tissue.
Red marrow
Confined to cavities in the spongy bone of flat bones and the epiphysis of some long bones.
Epiphyseal plate
A flat plate of hyaline cartilage .
Epiphyseal plate
A flat plate of hyaline cartilage .
Osteocytes
Mature bone cells ,
Lacunae
Tiny cavities
Lacunae
Tiny cavities
Canaliculi
Tiny canals , radiate outward from the central canals to all lacunae .
Lacunae
Tiny cavities
Canaliculi
Tiny canals , radiate outward from the central canals to all lacunae .
Ossificatiob
Process of bone formation .
Lacunae
Tiny cavities
Canaliculi
Tiny canals , radiate outward from the central canals to all lacunae .
Ossificatiob
Process of bone formation .
Osteoclasts
Giant bone destroying cells in bones
Lacunae
Tiny cavities
Canaliculi
Tiny canals , radiate outward from the central canals to all lacunae .
Ossificatiob
Process of bone formation .
Osteoclasts
Giant bone destroying cells in bones
Simple fractures
A fracture in which the bone breaks cleanly but does not penetrate the skin
Lacunae
Tiny cavities
Canaliculi
Tiny canals , radiate outward from the central canals to all lacunae .
Ossificatiob
Process of bone formation .
Osteoclasts
Giant bone destroying cells in bones
Simple fractures
A fracture in which the bone breaks cleanly but does not penetrate the skin
Compound fracture
When the broken bone ends penetrate through the skin
Lacunae
Tiny cavities
Canaliculi
Tiny canals , radiate outward from the central canals to all lacunae .
Ossificatiob
Process of bone formation .
Osteoclasts
Giant bone destroying cells in bones
Simple fractures
A fracture in which the bone breaks cleanly but does not penetrate the skin
Compound fracture
When the broken bone ends penetrate through the skin
Compression
Bone is crushed
Lacunae
Tiny cavities
Canaliculi
Tiny canals , radiate outward from the central canals to all lacunae .
Ossificatiob
Process of bone formation .
Osteoclasts
Giant bone destroying cells in bones
Simple fractures
A fracture in which the bone breaks cleanly but does not penetrate the skin
Compound fracture
When the broken bone ends penetrate through the skin
Compression
Bone is crushed
Comminuted
Bone breaks into many fragments
Lacunae
Tiny cavities
Canaliculi
Tiny canals , radiate outward from the central canals to all lacunae .
Ossificatiob
Process of bone formation .
Osteoclasts
Giant bone destroying cells in bones
Simple fractures
A fracture in which the bone breaks cleanly but does not penetrate the skin
Compound fracture
When the broken bone ends penetrate through the skin
Compression
Bone is crushed
Comminuted
Bone breaks into many fragments
Greenstick fracture
Bone breaks incompletely , much in the way a green twig breaks
Lacunae
Tiny cavities
Canaliculi
Tiny canals , radiate outward from the central canals to all lacunae .
Ossificatiob
Process of bone formation .
Osteoclasts
Giant bone destroying cells in bones
Simple fractures
A fracture in which the bone breaks cleanly but does not penetrate the skin
Compound fracture
When the broken bone ends penetrate through the skin
Compression
Bone is crushed
Comminuted
Bone breaks into many fragments
Greenstick fracture
Bone breaks incompletely , much in the way a green twig breaks
Axial skeleton
Bones that form the longitudinal axis of the body
Lacunae
Tiny cavities
Appendicular skeleton
The bones of the limbs and girdles
Canaliculi
Tiny canals , radiate outward from the central canals to all lacunae .
Ossificatiob
Process of bone formation .
Osteoclasts
Giant bone destroying cells in bones
Simple fractures
A fracture in which the bone breaks cleanly but does not penetrate the skin
Compound fracture
When the broken bone ends penetrate through the skin
Compression
Bone is crushed
Comminuted
Bone breaks into many fragments
Greenstick fracture
Bone breaks incompletely , much in the way a green twig breaks
Axial skeleton
Bones that form the longitudinal axis of the body
Lacunae
Tiny cavities
Appendicular skeleton
The bones of the limbs and girdles
Fontanels
Fibrous membranes connecting the cranial bones
Canaliculi
Tiny canals , radiate outward from the central canals to all lacunae .
Ossificatiob
Process of bone formation .
Osteoclasts
Giant bone destroying cells in bones
Simple fractures
A fracture in which the bone breaks cleanly but does not penetrate the skin
Compound fracture
When the broken bone ends penetrate through the skin
Compression
Bone is crushed
Comminuted
Bone breaks into many fragments
Greenstick fracture
Bone breaks incompletely , much in the way a green twig breaks
Axial skeleton
Bones that form the longitudinal axis of the body
Lacunae
Tiny cavities
Appendicular skeleton
The bones of the limbs and girdles
Fontanels
Fibrous membranes connecting the cranial bones
Hyoid bones
Only bone that doesn't articulate directly with any other bone
Canaliculi
Tiny canals , radiate outward from the central canals to all lacunae .
Ossificatiob
Process of bone formation .
Osteoclasts
Giant bone destroying cells in bones
Simple fractures
A fracture in which the bone breaks cleanly but does not penetrate the skin
Compound fracture
When the broken bone ends penetrate through the skin
Compression
Bone is crushed
Comminuted
Bone breaks into many fragments
Greenstick fracture
Bone breaks incompletely , much in the way a green twig breaks
Axial skeleton
Bones that form the longitudinal axis of the body
Lacunae
Tiny cavities
Appendicular skeleton
The bones of the limbs and girdles
Fontanels
Fibrous membranes connecting the cranial bones
Hyoid bones
Only bone that doesn't articulate directly with any other bone
Coccyx
Formed from the fusion of the three to five tiny, irregularly shaped vertebrae
Canaliculi
Tiny canals , radiate outward from the central canals to all lacunae .
Ossificatiob
Process of bone formation .
Osteoclasts
Giant bone destroying cells in bones
Simple fractures
A fracture in which the bone breaks cleanly but does not penetrate the skin
Compound fracture
When the broken bone ends penetrate through the skin
Compression
Bone is crushed
Comminuted
Bone breaks into many fragments
Greenstick fracture
Bone breaks incompletely , much in the way a green twig breaks
Axial skeleton
Bones that form the longitudinal axis of the body
Lacunae
Tiny cavities
Appendicular skeleton
The bones of the limbs and girdles
Fontanels
Fibrous membranes connecting the cranial bones
Hyoid bones
Only bone that doesn't articulate directly with any other bone
Coccyx
Formed from the fusion of the three to five tiny, irregularly shaped vertebrae
Lumbar
Portion of the back between the thorax and the pelvis
Canaliculi
Tiny canals , radiate outward from the central canals to all lacunae .
Ossificatiob
Process of bone formation .
Osteoclasts
Giant bone destroying cells in bones
Simple fractures
A fracture in which the bone breaks cleanly but does not penetrate the skin
Compound fracture
When the broken bone ends penetrate through the skin
Compression
Bone is crushed
Comminuted
Bone breaks into many fragments
Greenstick fracture
Bone breaks incompletely , much in the way a green twig breaks
Axial skeleton
Bones that form the longitudinal axis of the body
Lacunae
Tiny cavities
Appendicular skeleton
The bones of the limbs and girdles
Fontanels
Fibrous membranes connecting the cranial bones
Hyoid bones
Only bone that doesn't articulate directly with any other bone
Coccyx
Formed from the fusion of the three to five tiny, irregularly shaped vertebrae
Lumbar
Portion of the back between the thorax and the pelvis
Cervical
The neck or neckline portion of an organ or structure
Canaliculi
Tiny canals , radiate outward from the central canals to all lacunae .
Ossificatiob
Process of bone formation .
Osteoclasts
Giant bone destroying cells in bones
Simple fractures
A fracture in which the bone breaks cleanly but does not penetrate the skin
Compound fracture
When the broken bone ends penetrate through the skin
Compression
Bone is crushed
Comminuted
Bone breaks into many fragments
Greenstick fracture
Bone breaks incompletely , much in the way a green twig breaks
Axial skeleton
Bones that form the longitudinal axis of the body
Lacunae
Tiny cavities
Appendicular skeleton
The bones of the limbs and girdles
Fontanels
Fibrous membranes connecting the cranial bones
Hyoid bones
Only bone that doesn't articulate directly with any other bone
Coccyx
Formed from the fusion of the three to five tiny, irregularly shaped vertebrae
Lumbar
Portion of the back between the thorax and the pelvis
Cervical
The neck or neckline portion of an organ or structure
True ribd
First seven pairs attach directly to the sternum by costal cartilages
Canaliculi
Tiny canals , radiate outward from the central canals to all lacunae .
Ossificatiob
Process of bone formation .
Osteoclasts
Giant bone destroying cells in bones
Simple fractures
A fracture in which the bone breaks cleanly but does not penetrate the skin
Compound fracture
When the broken bone ends penetrate through the skin
Compression
Bone is crushed
Comminuted
Bone breaks into many fragments
Greenstick fracture
Bone breaks incompletely , much in the way a green twig breaks
Axial skeleton
Bones that form the longitudinal axis of the body
Lacunae
Tiny cavities
Appendicular skeleton
The bones of the limbs and girdles
Fontanels
Fibrous membranes connecting the cranial bones
Hyoid bones
Only bone that doesn't articulate directly with any other bone
Coccyx
Formed from the fusion of the three to five tiny, irregularly shaped vertebrae
Lumbar
Portion of the back between the thorax and the pelvis
Cervical
The neck or neckline portion of an organ or structure
True ribd
First seven pairs attach directly to the sternum by costal cartilages
Floating ribs
Last two pairs of false ribs lack the eternal attachments
Canaliculi
Tiny canals , radiate outward from the central canals to all lacunae .
Ossificatiob
Process of bone formation .
Osteoclasts
Giant bone destroying cells in bones
Simple fractures
A fracture in which the bone breaks cleanly but does not penetrate the skin
Compound fracture
When the broken bone ends penetrate through the skin
Compression
Bone is crushed
Comminuted
Bone breaks into many fragments
Greenstick fracture
Bone breaks incompletely , much in the way a green twig breaks
Axial skeleton
Bones that form the longitudinal axis of the body
Lacunae
Tiny cavities
Appendicular skeleton
The bones of the limbs and girdles
Fontanels
Fibrous membranes connecting the cranial bones
Hyoid bones
Only bone that doesn't articulate directly with any other bone
Coccyx
Formed from the fusion of the three to five tiny, irregularly shaped vertebrae
Lumbar
Portion of the back between the thorax and the pelvis
Cervical
The neck or neckline portion of an organ or structure
True ribd
First seven pairs attach directly to the sternum by costal cartilages
Floating ribs
Last two pairs of false ribs lack the eternal attachments
Phalanges
Bones of the fingers
Canaliculi
Tiny canals , radiate outward from the central canals to all lacunae .
Ossificatiob
Process of bone formation .
Osteoclasts
Giant bone destroying cells in bones
Simple fractures
A fracture in which the bone breaks cleanly but does not penetrate the skin
Compound fracture
When the broken bone ends penetrate through the skin
Compression
Bone is crushed
Comminuted
Bone breaks into many fragments
Greenstick fracture
Bone breaks incompletely , much in the way a green twig breaks
Axial skeleton
Bones that form the longitudinal axis of the body
Lacunae
Tiny cavities
Appendicular skeleton
The bones of the limbs and girdles
Fontanels
Fibrous membranes connecting the cranial bones
Hyoid bones
Only bone that doesn't articulate directly with any other bone
Coccyx
Formed from the fusion of the three to five tiny, irregularly shaped vertebrae
Lumbar
Portion of the back between the thorax and the pelvis
Cervical
The neck or neckline portion of an organ or structure
True ribd
First seven pairs attach directly to the sternum by costal cartilages
Floating ribs
Last two pairs of false ribs lack the eternal attachments
Phalanges
Bones of the fingers
Sternum
Breast bone
Canaliculi
Tiny canals , radiate outward from the central canals to all lacunae .
Ossificatiob
Process of bone formation .
Osteoclasts
Giant bone destroying cells in bones
Simple fractures
A fracture in which the bone breaks cleanly but does not penetrate the skin
Compound fracture
When the broken bone ends penetrate through the skin
Compression
Bone is crushed
Comminuted
Bone breaks into many fragments
Greenstick fracture
Bone breaks incompletely , much in the way a green twig breaks
Axial skeleton
Bones that form the longitudinal axis of the body
Lacunae
Tiny cavities
Appendicular skeleton
The bones of the limbs and girdles
Fontanels
Fibrous membranes connecting the cranial bones
Hyoid bones
Only bone that doesn't articulate directly with any other bone
Coccyx
Formed from the fusion of the three to five tiny, irregularly shaped vertebrae
Lumbar
Portion of the back between the thorax and the pelvis
Cervical
The neck or neckline portion of an organ or structure
True ribd
First seven pairs attach directly to the sternum by costal cartilages
Floating ribs
Last two pairs of false ribs lack the eternal attachments
Phalanges
Bones of the fingers
Sternum
Breast bone
Canaliculi
Tiny canals , radiate outward from the central canals to all lacunae .
Patella
Knee
Ossificatiob
Process of bone formation .
Osteoclasts
Giant bone destroying cells in bones
Simple fractures
A fracture in which the bone breaks cleanly but does not penetrate the skin
Compound fracture
When the broken bone ends penetrate through the skin
Compression
Bone is crushed
Comminuted
Bone breaks into many fragments
Greenstick fracture
Bone breaks incompletely , much in the way a green twig breaks
Axial skeleton
Bones that form the longitudinal axis of the body
Lacunae
Tiny cavities
Appendicular skeleton
The bones of the limbs and girdles
Fontanels
Fibrous membranes connecting the cranial bones
Hyoid bones
Only bone that doesn't articulate directly with any other bone
Coccyx
Formed from the fusion of the three to five tiny, irregularly shaped vertebrae
Lumbar
Portion of the back between the thorax and the pelvis
Cervical
The neck or neckline portion of an organ or structure
True ribd
First seven pairs attach directly to the sternum by costal cartilages
Floating ribs
Last two pairs of false ribs lack the eternal attachments
Phalanges
Bones of the fingers
Sternum
Breast bone
Canaliculi
Tiny canals , radiate outward from the central canals to all lacunae .
Patella
Knee
Femur
Thigh bone
Ossificatiob
Process of bone formation .
Osteoclasts
Giant bone destroying cells in bones
Simple fractures
A fracture in which the bone breaks cleanly but does not penetrate the skin
Compound fracture
When the broken bone ends penetrate through the skin
Compression
Bone is crushed
Comminuted
Bone breaks into many fragments
Greenstick fracture
Bone breaks incompletely , much in the way a green twig breaks
Axial skeleton
Bones that form the longitudinal axis of the body
Lacunae
Tiny cavities
Appendicular skeleton
The bones of the limbs and girdles
Fontanels
Fibrous membranes connecting the cranial bones
Hyoid bones
Only bone that doesn't articulate directly with any other bone
Coccyx
Formed from the fusion of the three to five tiny, irregularly shaped vertebrae
Lumbar
Portion of the back between the thorax and the pelvis
Cervical
The neck or neckline portion of an organ or structure
True ribd
First seven pairs attach directly to the sternum by costal cartilages
Floating ribs
Last two pairs of false ribs lack the eternal attachments
Phalanges
Bones of the fingers
Sternum
Breast bone
Canaliculi
Tiny canals , radiate outward from the central canals to all lacunae .
Patella
Knee
Femur
Thigh bone
Bursae
Flattened fibrous sacs lined with synovial membrane and containing a thin film of synovial fluid
Ossificatiob
Process of bone formation .
Osteoclasts
Giant bone destroying cells in bones
Simple fractures
A fracture in which the bone breaks cleanly but does not penetrate the skin
Compound fracture
When the broken bone ends penetrate through the skin
Compression
Bone is crushed
Comminuted
Bone breaks into many fragments
Greenstick fracture
Bone breaks incompletely , much in the way a green twig breaks
Axial skeleton
Bones that form the longitudinal axis of the body
Lacunae
Tiny cavities
Appendicular skeleton
The bones of the limbs and girdles
Fontanels
Fibrous membranes connecting the cranial bones
Hyoid bones
Only bone that doesn't articulate directly with any other bone
Coccyx
Formed from the fusion of the three to five tiny, irregularly shaped vertebrae
Lumbar
Portion of the back between the thorax and the pelvis
Cervical
The neck or neckline portion of an organ or structure
True ribd
First seven pairs attach directly to the sternum by costal cartilages
Floating ribs
Last two pairs of false ribs lack the eternal attachments
Phalanges
Bones of the fingers
Sternum
Breast bone
Canaliculi
Tiny canals , radiate outward from the central canals to all lacunae .
Patella
Knee
Femur
Thigh bone
Bursae
Flattened fibrous sacs lined with synovial membrane and containing a thin film of synovial fluid
Gout
A disease in which uric acid accumulates in the blood and may be deposited as needle-shaped crystals in the soft tissues of joints .
Ossificatiob
Process of bone formation .
Osteoclasts
Giant bone destroying cells in bones
Simple fractures
A fracture in which the bone breaks cleanly but does not penetrate the skin
Compound fracture
When the broken bone ends penetrate through the skin
Compression
Bone is crushed
Comminuted
Bone breaks into many fragments
Greenstick fracture
Bone breaks incompletely , much in the way a green twig breaks
Axial skeleton
Bones that form the longitudinal axis of the body
Lacunae
Tiny cavities
Appendicular skeleton
The bones of the limbs and girdles
Fontanels
Fibrous membranes connecting the cranial bones
Hyoid bones
Only bone that doesn't articulate directly with any other bone
Coccyx
Formed from the fusion of the three to five tiny, irregularly shaped vertebrae
Lumbar
Portion of the back between the thorax and the pelvis
Cervical
The neck or neckline portion of an organ or structure
True ribd
First seven pairs attach directly to the sternum by costal cartilages
Floating ribs
Last two pairs of false ribs lack the eternal attachments
Phalanges
Bones of the fingers
Sternum
Breast bone
Canaliculi
Tiny canals , radiate outward from the central canals to all lacunae .
Patella
Knee
Femur
Thigh bone
Bursae
Flattened fibrous sacs lined with synovial membrane and containing a thin film of synovial fluid
Gout
A disease in which uric acid accumulates in the blood and may be deposited as needle-shaped crystals in the soft tissues of joints .
Osteoporosis
Bone thinning disease that afflicts half of women over 65 and some 20 percent of men over 70
Ossificatiob
Process of bone formation .
Osteoclasts
Giant bone destroying cells in bones
Simple fractures
A fracture in which the bone breaks cleanly but does not penetrate the skin
Compound fracture
When the broken bone ends penetrate through the skin
Compression
Bone is crushed
Comminuted
Bone breaks into many fragments
Greenstick fracture
Bone breaks incompletely , much in the way a green twig breaks
Axial skeleton
Bones that form the longitudinal axis of the body
Skeletal Muscle
Help form the much smoother contours of the body . Huge , cigar shaped multinucleate cells
Smooth Muscle
No striations & is involuntary . Found mainly in walls of hallow organs
Smooth Muscle
No striations & is involuntary . Found mainly in walls of hallow organs
Cardiac Muscle
Found o my in one place in the body - the heart .
Smooth Muscle
No striations & is involuntary . Found mainly in walls of hallow organs
Cardiac Muscle
Found o my in one place in the body - the heart .
Striated muscle
Also known as skeletal muscle because it's fibers have obvious stripes
Smooth Muscle
No striations & is involuntary . Found mainly in walls of hallow organs
Cardiac Muscle
Found o my in one place in the body - the heart .
Striated muscle
Also known as skeletal muscle because it's fibers have obvious stripes
Endomysium
The thin connective tissue surrounding each muscle fibers
Smooth Muscle
No striations & is involuntary . Found mainly in walls of hallow organs
Cardiac Muscle
Found o my in one place in the body - the heart .
Striated muscle
Also known as skeletal muscle because it's fibers have obvious stripes
Endomysium
The thin connective tissue surrounding each muscle fibers
Fasicle
A bundle of nerve or muscle fibers Bound together by connective tissue
Smooth Muscle
No striations & is involuntary . Found mainly in walls of hallow organs
Cardiac Muscle
Found o my in one place in the body - the heart .
Striated muscle
Also known as skeletal muscle because it's fibers have obvious stripes
Endomysium
The thin connective tissue surrounding each muscle fibers
Fasicle
A bundle of nerve or muscle fibers Bound together by connective tissue
Tendons
Cord of dense fibrous tissue attaching a muscle to a bone
Smooth Muscle
No striations & is involuntary . Found mainly in walls of hallow organs
Cardiac Muscle
Found o my in one place in the body - the heart .
Striated muscle
Also known as skeletal muscle because it's fibers have obvious stripes
Endomysium
The thin connective tissue surrounding each muscle fibers
Fasicle
A bundle of nerve or muscle fibers Bound together by connective tissue
Tendons
Cord of dense fibrous tissue attaching a muscle to a bone
Sarcolema
Vgc
Smooth Muscle
No striations & is involuntary . Found mainly in walls of hallow organs
Cardiac Muscle
Found o my in one place in the body - the heart .
Striated muscle
Also known as skeletal muscle because it's fibers have obvious stripes
Endomysium
The thin connective tissue surrounding each muscle fibers
Fasicle
A bundle of nerve or muscle fibers Bound together by connective tissue
Tendons
Cord of dense fibrous tissue attaching a muscle to a bone
Sarcolema
Vgc
Sarcolemma
Oval nuclei beneath the plasma membrane
Sarcolemma
Oval nuclei beneath the plasma membrane
Myofibrils
Long ribbonlike organelles
Sarcolemma
Oval nuclei beneath the plasma membrane
Myofibrils
Long ribbonlike organelles
Sarcomere
Chains of tiny contractile units
Sarcolemma
Oval nuclei beneath the plasma membrane
Myofibrils
Long ribbonlike organelles
Sarcomere
Chains of tiny contractile units
Myofilaments
Filaments composing the myofibrils. Two types : actin & myosin
Sarcolemma
Oval nuclei beneath the plasma membrane
Myofibrils
Long ribbonlike organelles
Sarcomere
Chains of tiny contractile units
Myofilaments
Filaments composing the myofibrils. Two types : actin & myosin
Actin
Contractile protein
Sarcolemma
Oval nuclei beneath the plasma membrane
Myofibrils
Long ribbonlike organelles
Sarcomere
Chains of tiny contractile units
Myofilaments
Filaments composing the myofibrils. Two types : actin & myosin
Actin
Contractile protein
Myosin
Principal contractile proteins found in muscles
Sarcolemma
Oval nuclei beneath the plasma membrane
Myofibrils
Long ribbonlike organelles
Sarcomere
Chains of tiny contractile units
Myofilaments
Filaments composing the myofibrils. Two types : actin & myosin
Actin
Contractile protein
Myosin
Principal contractile proteins found in muscles
Synaptic cleft
The fluid - filled space at a synapse between neurons
Sarcolemma
Oval nuclei beneath the plasma membrane
Myofibrils
Long ribbonlike organelles
Sarcomere
Chains of tiny contractile units
Myofilaments
Filaments composing the myofibrils. Two types : actin & myosin
Actin
Contractile protein
Myosin
Principal contractile proteins found in muscles
Synaptic cleft
The fluid - filled space at a synapse between neurons
Axon
Neuron process that carries impulses away from the nerve cell body;
Sarcolemma
Oval nuclei beneath the plasma membrane
Myofibrils
Long ribbonlike organelles
Sarcomere
Chains of tiny contractile units
Myofilaments
Filaments composing the myofibrils. Two types : actin & myosin
Actin
Contractile protein
Myosin
Principal contractile proteins found in muscles
Synaptic cleft
The fluid - filled space at a synapse between neurons
Axon
Neuron process that carries impulses away from the nerve cell body;
Neuromuscular junction
The region were a motor neuron comes into close contact with a skeletal muscle cell
Sarcolemma
Oval nuclei beneath the plasma membrane
Myofibrils
Long ribbonlike organelles
Sarcomere
Chains of tiny contractile units
Myofilaments
Filaments composing the myofibrils. Two types : actin & myosin
Actin
Contractile protein
Myosin
Principal contractile proteins found in muscles
Synaptic cleft
The fluid - filled space at a synapse between neurons
Axon
Neuron process that carries impulses away from the nerve cell body;
Neuromuscular junction
The region were a motor neuron comes into close contact with a skeletal muscle cell
Acetylcholine
A chemical transmitter substance released by certain nerve endings
Sarcolemma
Oval nuclei beneath the plasma membrane
Action potential
Electrical event occurring when a stimulus of sufficient intensity is applied to a neuron or muscle cell
Myofibrils
Long ribbonlike organelles
Sarcomere
Chains of tiny contractile units
Myofilaments
Filaments composing the myofibrils. Two types : actin & myosin
Actin
Contractile protein
Myosin
Principal contractile proteins found in muscles
Synaptic cleft
The fluid - filled space at a synapse between neurons
Axon
Neuron process that carries impulses away from the nerve cell body;
Neuromuscular junction
The region were a motor neuron comes into close contact with a skeletal muscle cell
Acetylcholine
A chemical transmitter substance released by certain nerve endings
Sarcolemma
Oval nuclei beneath the plasma membrane
Action potential
Electrical event occurring when a stimulus of sufficient intensity is applied to a neuron or muscle cell
Muscle teotches
A single rapid contraction of a muscle followed by relaxation
Myofibrils
Long ribbonlike organelles
Sarcomere
Chains of tiny contractile units
Myofilaments
Filaments composing the myofibrils. Two types : actin & myosin
Actin
Contractile protein
Myosin
Principal contractile proteins found in muscles
Synaptic cleft
The fluid - filled space at a synapse between neurons
Axon
Neuron process that carries impulses away from the nerve cell body;
Neuromuscular junction
The region were a motor neuron comes into close contact with a skeletal muscle cell
Acetylcholine
A chemical transmitter substance released by certain nerve endings
Sarcolemma
Oval nuclei beneath the plasma membrane
Action potential
Electrical event occurring when a stimulus of sufficient intensity is applied to a neuron or muscle cell
Muscle teotches
A single rapid contraction of a muscle followed by relaxation
Complete tetanus
The muscle is stimulated so rapidly that no evidence of relaxation is seen and the contractions are completely smooth and sustained
Myofibrils
Long ribbonlike organelles
Sarcomere
Chains of tiny contractile units
Myofilaments
Filaments composing the myofibrils. Two types : actin & myosin
Actin
Contractile protein
Myosin
Principal contractile proteins found in muscles
Synaptic cleft
The fluid - filled space at a synapse between neurons
Axon
Neuron process that carries impulses away from the nerve cell body;
Neuromuscular junction
The region were a motor neuron comes into close contact with a skeletal muscle cell
Acetylcholine
A chemical transmitter substance released by certain nerve endings
Sarcolemma
Oval nuclei beneath the plasma membrane
Action potential
Electrical event occurring when a stimulus of sufficient intensity is applied to a neuron or muscle cell
Muscle teotches
A single rapid contraction of a muscle followed by relaxation
Complete tetanus
The muscle is stimulated so rapidly that no evidence of relaxation is seen and the contractions are completely smooth and sustained
Creatine phosphate
Found in muscle fibers but not other cell types
Myofibrils
Long ribbonlike organelles
Sarcomere
Chains of tiny contractile units
Myofilaments
Filaments composing the myofibrils. Two types : actin & myosin
Actin
Contractile protein
Myosin
Principal contractile proteins found in muscles
Synaptic cleft
The fluid - filled space at a synapse between neurons
Axon
Neuron process that carries impulses away from the nerve cell body;
Neuromuscular junction
The region were a motor neuron comes into close contact with a skeletal muscle cell
Acetylcholine
A chemical transmitter substance released by certain nerve endings
Sarcolemma
Oval nuclei beneath the plasma membrane
Action potential
Electrical event occurring when a stimulus of sufficient intensity is applied to a neuron or muscle cell
Muscle teotches
A single rapid contraction of a muscle followed by relaxation
Complete tetanus
The muscle is stimulated so rapidly that no evidence of relaxation is seen and the contractions are completely smooth and sustained
Creatine phosphate
Found in muscle fibers but not other cell types
Lactic acid
The product of anaerobic metabolism , especially in muscle
Myofibrils
Long ribbonlike organelles
Sarcomere
Chains of tiny contractile units
Myofilaments
Filaments composing the myofibrils. Two types : actin & myosin
Actin
Contractile protein
Myosin
Principal contractile proteins found in muscles
Synaptic cleft
The fluid - filled space at a synapse between neurons
Axon
Neuron process that carries impulses away from the nerve cell body;
Neuromuscular junction
The region were a motor neuron comes into close contact with a skeletal muscle cell
Acetylcholine
A chemical transmitter substance released by certain nerve endings
Sarcolemma
Oval nuclei beneath the plasma membrane
Action potential
Electrical event occurring when a stimulus of sufficient intensity is applied to a neuron or muscle cell
Muscle teotches
A single rapid contraction of a muscle followed by relaxation
Complete tetanus
The muscle is stimulated so rapidly that no evidence of relaxation is seen and the contractions are completely smooth and sustained
Creatine phosphate
Found in muscle fibers but not other cell types
Lactic acid
The product of anaerobic metabolism , especially in muscle
Isometric exercise
Of the same length .
Myofibrils
Long ribbonlike organelles
Sarcomere
Chains of tiny contractile units
Myofilaments
Filaments composing the myofibrils. Two types : actin & myosin
Actin
Contractile protein
Myosin
Principal contractile proteins found in muscles
Synaptic cleft
The fluid - filled space at a synapse between neurons
Axon
Neuron process that carries impulses away from the nerve cell body;
Neuromuscular junction
The region were a motor neuron comes into close contact with a skeletal muscle cell
Acetylcholine
A chemical transmitter substance released by certain nerve endings
Sarcolemma
Oval nuclei beneath the plasma membrane
Action potential
Electrical event occurring when a stimulus of sufficient intensity is applied to a neuron or muscle cell
Muscle teotches
A single rapid contraction of a muscle followed by relaxation
Complete tetanus
The muscle is stimulated so rapidly that no evidence of relaxation is seen and the contractions are completely smooth and sustained
Creatine phosphate
Found in muscle fibers but not other cell types
Lactic acid
The product of anaerobic metabolism , especially in muscle
Isometric exercise
Of the same length .
Flexion
Bending; the movement that decreases the angle between bones
Myofibrils
Long ribbonlike organelles
Sarcomere
Chains of tiny contractile units
Myofilaments
Filaments composing the myofibrils. Two types : actin & myosin
Actin
Contractile protein
Myosin
Principal contractile proteins found in muscles
Synaptic cleft
The fluid - filled space at a synapse between neurons
Axon
Neuron process that carries impulses away from the nerve cell body;
Neuromuscular junction
The region were a motor neuron comes into close contact with a skeletal muscle cell
Acetylcholine
A chemical transmitter substance released by certain nerve endings
Sarcolemma
Oval nuclei beneath the plasma membrane
Action potential
Electrical event occurring when a stimulus of sufficient intensity is applied to a neuron or muscle cell
Muscle teotches
A single rapid contraction of a muscle followed by relaxation
Complete tetanus
The muscle is stimulated so rapidly that no evidence of relaxation is seen and the contractions are completely smooth and sustained
Creatine phosphate
Found in muscle fibers but not other cell types
Lactic acid
The product of anaerobic metabolism , especially in muscle
Isometric exercise
Of the same length .
Flexion
Bending; the movement that decreases the angle between bones
Extension
Movement that increases the angle of a joint , straightening a flexed knee
Myofibrils
Long ribbonlike organelles
Sarcomere
Chains of tiny contractile units
Myofilaments
Filaments composing the myofibrils. Two types : actin & myosin
Actin
Contractile protein
Myosin
Principal contractile proteins found in muscles
Synaptic cleft
The fluid - filled space at a synapse between neurons
Axon
Neuron process that carries impulses away from the nerve cell body;
Neuromuscular junction
The region were a motor neuron comes into close contact with a skeletal muscle cell
Acetylcholine
A chemical transmitter substance released by certain nerve endings
Sarcolemma
Oval nuclei beneath the plasma membrane
Action potential
Electrical event occurring when a stimulus of sufficient intensity is applied to a neuron or muscle cell
Muscle teotches
A single rapid contraction of a muscle followed by relaxation
Complete tetanus
The muscle is stimulated so rapidly that no evidence of relaxation is seen and the contractions are completely smooth and sustained
Creatine phosphate
Found in muscle fibers but not other cell types
Lactic acid
The product of anaerobic metabolism , especially in muscle
Isometric exercise
Of the same length .
Flexion
Bending; the movement that decreases the angle between bones
Extension
Movement that increases the angle of a joint , straightening a flexed knee
Rotation
Movement of a bone around its longitudinal axis
Myofibrils
Long ribbonlike organelles
Sarcomere
Chains of tiny contractile units
Myofilaments
Filaments composing the myofibrils. Two types : actin & myosin
Actin
Contractile protein
Myosin
Principal contractile proteins found in muscles
Synaptic cleft
The fluid - filled space at a synapse between neurons
Axon
Neuron process that carries impulses away from the nerve cell body;
Neuromuscular junction
The region were a motor neuron comes into close contact with a skeletal muscle cell
Acetylcholine
A chemical transmitter substance released by certain nerve endings
Sarcolemma
Oval nuclei beneath the plasma membrane
Action potential
Electrical event occurring when a stimulus of sufficient intensity is applied to a neuron or muscle cell
Muscle teotches
A single rapid contraction of a muscle followed by relaxation
Complete tetanus
The muscle is stimulated so rapidly that no evidence of relaxation is seen and the contractions are completely smooth and sustained
Creatine phosphate
Found in muscle fibers but not other cell types
Lactic acid
The product of anaerobic metabolism , especially in muscle
Isometric exercise
Of the same length .
Flexion
Bending; the movement that decreases the angle between bones
Extension
Movement that increases the angle of a joint , straightening a flexed knee
Rotation
Movement of a bone around its longitudinal axis
Circumduction
A combination of Flexion , extension , abduction , and adduction .
Myofibrils
Long ribbonlike organelles
Sarcomere
Chains of tiny contractile units
Myofilaments
Filaments composing the myofibrils. Two types : actin & myosin
Actin
Contractile protein
Myosin
Principal contractile proteins found in muscles
Synaptic cleft
The fluid - filled space at a synapse between neurons
Axon
Neuron process that carries impulses away from the nerve cell body;
Neuromuscular junction
The region were a motor neuron comes into close contact with a skeletal muscle cell
Acetylcholine
A chemical transmitter substance released by certain nerve endings
Sarcolemma
Oval nuclei beneath the plasma membrane
Action potential
Electrical event occurring when a stimulus of sufficient intensity is applied to a neuron or muscle cell
Muscle teotches
A single rapid contraction of a muscle followed by relaxation
Complete tetanus
The muscle is stimulated so rapidly that no evidence of relaxation is seen and the contractions are completely smooth and sustained
Creatine phosphate
Found in muscle fibers but not other cell types
Lactic acid
The product of anaerobic metabolism , especially in muscle
Isometric exercise
Of the same length .
Flexion
Bending; the movement that decreases the angle between bones
Extension
Movement that increases the angle of a joint , straightening a flexed knee
Rotation
Movement of a bone around its longitudinal axis
Circumduction
A combination of Flexion , extension , abduction , and adduction .
Myofibrils
Long ribbonlike organelles
Orogin
Attachment of a muscle that remains relatively fixed during muscular contraction
Sarcomere
Chains of tiny contractile units
Myofilaments
Filaments composing the myofibrils. Two types : actin & myosin
Actin
Contractile protein
Myosin
Principal contractile proteins found in muscles
Synaptic cleft
The fluid - filled space at a synapse between neurons
Axon
Neuron process that carries impulses away from the nerve cell body;
Neuromuscular junction
The region were a motor neuron comes into close contact with a skeletal muscle cell
Acetylcholine
A chemical transmitter substance released by certain nerve endings
Sarcolemma
Oval nuclei beneath the plasma membrane
Action potential
Electrical event occurring when a stimulus of sufficient intensity is applied to a neuron or muscle cell
Muscle teotches
A single rapid contraction of a muscle followed by relaxation
Complete tetanus
The muscle is stimulated so rapidly that no evidence of relaxation is seen and the contractions are completely smooth and sustained
Creatine phosphate
Found in muscle fibers but not other cell types
Lactic acid
The product of anaerobic metabolism , especially in muscle
Isometric exercise
Of the same length .
Flexion
Bending; the movement that decreases the angle between bones
Extension
Movement that increases the angle of a joint , straightening a flexed knee
Rotation
Movement of a bone around its longitudinal axis
Circumduction
A combination of Flexion , extension , abduction , and adduction .
Myofibrils
Long ribbonlike organelles
Orogin
Attachment of a muscle that remains relatively fixed during muscular contraction
Insertion
The movable attachment of a muscle as opposed to its origin
Sarcomere
Chains of tiny contractile units
Myofilaments
Filaments composing the myofibrils. Two types : actin & myosin
Actin
Contractile protein
Myosin
Principal contractile proteins found in muscles
Synaptic cleft
The fluid - filled space at a synapse between neurons
Axon
Neuron process that carries impulses away from the nerve cell body;
Neuromuscular junction
The region were a motor neuron comes into close contact with a skeletal muscle cell
Acetylcholine
A chemical transmitter substance released by certain nerve endings
Sarcolemma
Oval nuclei beneath the plasma membrane
Action potential
Electrical event occurring when a stimulus of sufficient intensity is applied to a neuron or muscle cell
Muscle teotches
A single rapid contraction of a muscle followed by relaxation
Complete tetanus
The muscle is stimulated so rapidly that no evidence of relaxation is seen and the contractions are completely smooth and sustained
Creatine phosphate
Found in muscle fibers but not other cell types
Lactic acid
The product of anaerobic metabolism , especially in muscle
Isometric exercise
Of the same length .
Flexion
Bending; the movement that decreases the angle between bones
Extension
Movement that increases the angle of a joint , straightening a flexed knee
Rotation
Movement of a bone around its longitudinal axis
Circumduction
A combination of Flexion , extension , abduction , and adduction .
Myofibrils
Long ribbonlike organelles
Orogin
Attachment of a muscle that remains relatively fixed during muscular contraction
Insertion
The movable attachment of a muscle as opposed to its origin
Platysma
A single sheet like muscle that covers the anterolateral neck
Sarcomere
Chains of tiny contractile units
Myofilaments
Filaments composing the myofibrils. Two types : actin & myosin
Actin
Contractile protein
Myosin
Principal contractile proteins found in muscles
Synaptic cleft
The fluid - filled space at a synapse between neurons
Axon
Neuron process that carries impulses away from the nerve cell body;
Neuromuscular junction
The region were a motor neuron comes into close contact with a skeletal muscle cell
Acetylcholine
A chemical transmitter substance released by certain nerve endings
Sarcolemma
Oval nuclei beneath the plasma membrane
Action potential
Electrical event occurring when a stimulus of sufficient intensity is applied to a neuron or muscle cell
Muscle teotches
A single rapid contraction of a muscle followed by relaxation
Complete tetanus
The muscle is stimulated so rapidly that no evidence of relaxation is seen and the contractions are completely smooth and sustained
Creatine phosphate
Found in muscle fibers but not other cell types
Lactic acid
The product of anaerobic metabolism , especially in muscle
Isometric exercise
Of the same length .
Flexion
Bending; the movement that decreases the angle between bones
Extension
Movement that increases the angle of a joint , straightening a flexed knee
Rotation
Movement of a bone around its longitudinal axis
Circumduction
A combination of Flexion , extension , abduction , and adduction .
Myofibrils
Long ribbonlike organelles
Orogin
Attachment of a muscle that remains relatively fixed during muscular contraction
Insertion
The movable attachment of a muscle as opposed to its origin
Platysma
A single sheet like muscle that covers the anterolateral neck
Zygomaticus
Raises corner of mouth
Sarcomere
Chains of tiny contractile units
Myofilaments
Filaments composing the myofibrils. Two types : actin & myosin
Actin
Contractile protein
Myosin
Principal contractile proteins found in muscles
Synaptic cleft
The fluid - filled space at a synapse between neurons
Axon
Neuron process that carries impulses away from the nerve cell body;
Neuromuscular junction
The region were a motor neuron comes into close contact with a skeletal muscle cell
Acetylcholine
A chemical transmitter substance released by certain nerve endings
Sarcolemma
Oval nuclei beneath the plasma membrane
Action potential
Electrical event occurring when a stimulus of sufficient intensity is applied to a neuron or muscle cell
Muscle teotches
A single rapid contraction of a muscle followed by relaxation
Complete tetanus
The muscle is stimulated so rapidly that no evidence of relaxation is seen and the contractions are completely smooth and sustained
Creatine phosphate
Found in muscle fibers but not other cell types
Lactic acid
The product of anaerobic metabolism , especially in muscle
Isometric exercise
Of the same length .
Flexion
Bending; the movement that decreases the angle between bones
Extension
Movement that increases the angle of a joint , straightening a flexed knee
Rotation
Movement of a bone around its longitudinal axis
Circumduction
A combination of Flexion , extension , abduction , and adduction .
Myofibrils
Long ribbonlike organelles
Orogin
Attachment of a muscle that remains relatively fixed during muscular contraction
Insertion
The movable attachment of a muscle as opposed to its origin
Platysma
A single sheet like muscle that covers the anterolateral neck
Zygomaticus
Raises corner of mouth
Intercostal
Deep muscles between found between the ribs
Sarcomere
Chains of tiny contractile units
Myofilaments
Filaments composing the myofibrils. Two types : actin & myosin
Actin
Contractile protein
Myosin
Principal contractile proteins found in muscles
Synaptic cleft
The fluid - filled space at a synapse between neurons
Axon
Neuron process that carries impulses away from the nerve cell body;
Neuromuscular junction
The region were a motor neuron comes into close contact with a skeletal muscle cell
Acetylcholine
A chemical transmitter substance released by certain nerve endings
Sarcolemma
Oval nuclei beneath the plasma membrane
Action potential
Electrical event occurring when a stimulus of sufficient intensity is applied to a neuron or muscle cell
Muscle teotches
A single rapid contraction of a muscle followed by relaxation
Complete tetanus
The muscle is stimulated so rapidly that no evidence of relaxation is seen and the contractions are completely smooth and sustained
Creatine phosphate
Found in muscle fibers but not other cell types
Lactic acid
The product of anaerobic metabolism , especially in muscle
Isometric exercise
Of the same length .
Flexion
Bending; the movement that decreases the angle between bones
Extension
Movement that increases the angle of a joint , straightening a flexed knee
Rotation
Movement of a bone around its longitudinal axis
Circumduction
A combination of Flexion , extension , abduction , and adduction .
Myofibrils
Long ribbonlike organelles
Orogin
Attachment of a muscle that remains relatively fixed during muscular contraction
Insertion
The movable attachment of a muscle as opposed to its origin
Platysma
A single sheet like muscle that covers the anterolateral neck
Zygomaticus
Raises corner of mouth
Intercostal
Deep muscles between found between the ribs
Latissimus dorsi
Two large flat muscles that cover the lower back
Sarcomere
Chains of tiny contractile units
Myofilaments
Filaments composing the myofibrils. Two types : actin & myosin
Actin
Contractile protein
Myosin
Principal contractile proteins found in muscles
Synaptic cleft
The fluid - filled space at a synapse between neurons
Axon
Neuron process that carries impulses away from the nerve cell body;
Neuromuscular junction
The region were a motor neuron comes into close contact with a skeletal muscle cell
Acetylcholine
A chemical transmitter substance released by certain nerve endings
Sarcolemma
Oval nuclei beneath the plasma membrane
Action potential
Electrical event occurring when a stimulus of sufficient intensity is applied to a neuron or muscle cell
Muscle teotches
A single rapid contraction of a muscle followed by relaxation
Complete tetanus
The muscle is stimulated so rapidly that no evidence of relaxation is seen and the contractions are completely smooth and sustained
Creatine phosphate
Found in muscle fibers but not other cell types
Lactic acid
The product of anaerobic metabolism , especially in muscle
Isometric exercise
Of the same length .
Flexion
Bending; the movement that decreases the angle between bones
Extension
Movement that increases the angle of a joint , straightening a flexed knee
Rotation
Movement of a bone around its longitudinal axis
Circumduction
A combination of Flexion , extension , abduction , and adduction .
Myofibrils
Long ribbonlike organelles
Orogin
Attachment of a muscle that remains relatively fixed during muscular contraction
Insertion
The movable attachment of a muscle as opposed to its origin
Platysma
A single sheet like muscle that covers the anterolateral neck
Zygomaticus
Raises corner of mouth
Intercostal
Deep muscles between found between the ribs
Latissimus dorsi
Two large flat muscles that cover the lower back
Gluteus maximus
Superficial muscle of the hip that forms most of the flesh of the buttock
Sarcomere
Chains of tiny contractile units
Myofilaments
Filaments composing the myofibrils. Two types : actin & myosin
Actin
Contractile protein
Myosin
Principal contractile proteins found in muscles
Synaptic cleft
The fluid - filled space at a synapse between neurons
Axon
Neuron process that carries impulses away from the nerve cell body;
Neuromuscular junction
The region were a motor neuron comes into close contact with a skeletal muscle cell
Acetylcholine
A chemical transmitter substance released by certain nerve endings
Sarcolemma
Oval nuclei beneath the plasma membrane
Action potential
Electrical event occurring when a stimulus of sufficient intensity is applied to a neuron or muscle cell
Muscle teotches
A single rapid contraction of a muscle followed by relaxation
Complete tetanus
The muscle is stimulated so rapidly that no evidence of relaxation is seen and the contractions are completely smooth and sustained
Creatine phosphate
Found in muscle fibers but not other cell types
Lactic acid
The product of anaerobic metabolism , especially in muscle
Isometric exercise
Of the same length .
Flexion
Bending; the movement that decreases the angle between bones
Extension
Movement that increases the angle of a joint , straightening a flexed knee
Rotation
Movement of a bone around its longitudinal axis
Circumduction
A combination of Flexion , extension , abduction , and adduction .
Myofibrils
Long ribbonlike organelles
Orogin
Attachment of a muscle that remains relatively fixed during muscular contraction
Insertion
The movable attachment of a muscle as opposed to its origin
Platysma
A single sheet like muscle that covers the anterolateral neck
Zygomaticus
Raises corner of mouth
Intercostal
Deep muscles between found between the ribs
Latissimus dorsi
Two large flat muscles that cover the lower back
Gluteus maximus
Superficial muscle of the hip that forms most of the flesh of the buttock
CNS
Consists of the brain and spinal cord
Sarcomere
Chains of tiny contractile units
Myofilaments
Filaments composing the myofibrils. Two types : actin & myosin
Actin
Contractile protein
Myosin
Principal contractile proteins found in muscles
Synaptic cleft
The fluid - filled space at a synapse between neurons
Axon
Neuron process that carries impulses away from the nerve cell body;
Neuromuscular junction
The region were a motor neuron comes into close contact with a skeletal muscle cell
Acetylcholine
A chemical transmitter substance released by certain nerve endings
Sarcolemma
Oval nuclei beneath the plasma membrane
Action potential
Electrical event occurring when a stimulus of sufficient intensity is applied to a neuron or muscle cell
Muscle teotches
A single rapid contraction of a muscle followed by relaxation
Complete tetanus
The muscle is stimulated so rapidly that no evidence of relaxation is seen and the contractions are completely smooth and sustained
Creatine phosphate
Found in muscle fibers but not other cell types
Lactic acid
The product of anaerobic metabolism , especially in muscle
Isometric exercise
Of the same length .
Flexion
Bending; the movement that decreases the angle between bones
Extension
Movement that increases the angle of a joint , straightening a flexed knee
Rotation
Movement of a bone around its longitudinal axis
Circumduction
A combination of Flexion , extension , abduction , and adduction .
Myofibrils
Long ribbonlike organelles
Orogin
Attachment of a muscle that remains relatively fixed during muscular contraction
Insertion
The movable attachment of a muscle as opposed to its origin
Platysma
A single sheet like muscle that covers the anterolateral neck
Zygomaticus
Raises corner of mouth
Intercostal
Deep muscles between found between the ribs
Latissimus dorsi
Two large flat muscles that cover the lower back
Gluteus maximus
Superficial muscle of the hip that forms most of the flesh of the buttock
CNS
Consists of the brain and spinal cord
PNS
Consists mainly of the nerves that extend from the brain to the spinal cord
Sarcomere
Chains of tiny contractile units
Myofilaments
Filaments composing the myofibrils. Two types : actin & myosin
Actin
Contractile protein
Myosin
Principal contractile proteins found in muscles
Synaptic cleft
The fluid - filled space at a synapse between neurons
Axon
Neuron process that carries impulses away from the nerve cell body;
Neuromuscular junction
The region were a motor neuron comes into close contact with a skeletal muscle cell
Acetylcholine
A chemical transmitter substance released by certain nerve endings
Sarcolemma
Oval nuclei beneath the plasma membrane
Action potential
Electrical event occurring when a stimulus of sufficient intensity is applied to a neuron or muscle cell
Muscle teotches
A single rapid contraction of a muscle followed by relaxation
Complete tetanus
The muscle is stimulated so rapidly that no evidence of relaxation is seen and the contractions are completely smooth and sustained
Creatine phosphate
Found in muscle fibers but not other cell types
Lactic acid
The product of anaerobic metabolism , especially in muscle
Isometric exercise
Of the same length .
Flexion
Bending; the movement that decreases the angle between bones
Extension
Movement that increases the angle of a joint , straightening a flexed knee
Rotation
Movement of a bone around its longitudinal axis
Circumduction
A combination of Flexion , extension , abduction , and adduction .
Myofibrils
Long ribbonlike organelles
Orogin
Attachment of a muscle that remains relatively fixed during muscular contraction
Insertion
The movable attachment of a muscle as opposed to its origin
Platysma
A single sheet like muscle that covers the anterolateral neck
Zygomaticus
Raises corner of mouth
Intercostal
Deep muscles between found between the ribs
Latissimus dorsi
Two large flat muscles that cover the lower back
Gluteus maximus
Superficial muscle of the hip that forms most of the flesh of the buttock
CNS
Consists of the brain and spinal cord
PNS
Consists mainly of the nerves that extend from the brain to the spinal cord
Afferent
Consists of nerves that convey impulses to the CNS from the sensory receptors.
Sarcomere
Chains of tiny contractile units
Myofilaments
Filaments composing the myofibrils. Two types : actin & myosin
Actin
Contractile protein
Myosin
Principal contractile proteins found in muscles
Synaptic cleft
The fluid - filled space at a synapse between neurons
Axon
Neuron process that carries impulses away from the nerve cell body;
Neuromuscular junction
The region were a motor neuron comes into close contact with a skeletal muscle cell
Acetylcholine
A chemical transmitter substance released by certain nerve endings
Sarcolemma
Oval nuclei beneath the plasma membrane
Action potential
Electrical event occurring when a stimulus of sufficient intensity is applied to a neuron or muscle cell
Muscle teotches
A single rapid contraction of a muscle followed by relaxation
Complete tetanus
The muscle is stimulated so rapidly that no evidence of relaxation is seen and the contractions are completely smooth and sustained
Creatine phosphate
Found in muscle fibers but not other cell types
Lactic acid
The product of anaerobic metabolism , especially in muscle
Isometric exercise
Of the same length .
Flexion
Bending; the movement that decreases the angle between bones
Extension
Movement that increases the angle of a joint , straightening a flexed knee
Rotation
Movement of a bone around its longitudinal axis
Circumduction
A combination of Flexion , extension , abduction , and adduction .
Myofibrils
Long ribbonlike organelles
Orogin
Attachment of a muscle that remains relatively fixed during muscular contraction
Insertion
The movable attachment of a muscle as opposed to its origin
Platysma
A single sheet like muscle that covers the anterolateral neck
Zygomaticus
Raises corner of mouth
Intercostal
Deep muscles between found between the ribs
Latissimus dorsi
Two large flat muscles that cover the lower back
Gluteus maximus
Superficial muscle of the hip that forms most of the flesh of the buttock
CNS
Consists of the brain and spinal cord
PNS
Consists mainly of the nerves that extend from the brain to the spinal cord
Afferent
Consists of nerves that convey impulses to the CNS from the sensory receptors.
Sarcomere
Chains of tiny contractile units
Efferent
Carries impulses from the CNS to effector organs, the muscles , and glands
Myofilaments
Filaments composing the myofibrils. Two types : actin & myosin
Actin
Contractile protein
Myosin
Principal contractile proteins found in muscles
Synaptic cleft
The fluid - filled space at a synapse between neurons
Axon
Neuron process that carries impulses away from the nerve cell body;
Neuromuscular junction
The region were a motor neuron comes into close contact with a skeletal muscle cell
Acetylcholine
A chemical transmitter substance released by certain nerve endings
Sarcolemma
Oval nuclei beneath the plasma membrane
Action potential
Electrical event occurring when a stimulus of sufficient intensity is applied to a neuron or muscle cell
Muscle teotches
A single rapid contraction of a muscle followed by relaxation
Complete tetanus
The muscle is stimulated so rapidly that no evidence of relaxation is seen and the contractions are completely smooth and sustained
Creatine phosphate
Found in muscle fibers but not other cell types
Lactic acid
The product of anaerobic metabolism , especially in muscle
Isometric exercise
Of the same length .
Flexion
Bending; the movement that decreases the angle between bones
Extension
Movement that increases the angle of a joint , straightening a flexed knee
Rotation
Movement of a bone around its longitudinal axis
Circumduction
A combination of Flexion , extension , abduction , and adduction .
Myofibrils
Long ribbonlike organelles
Orogin
Attachment of a muscle that remains relatively fixed during muscular contraction
Insertion
The movable attachment of a muscle as opposed to its origin
Platysma
A single sheet like muscle that covers the anterolateral neck
Zygomaticus
Raises corner of mouth
Intercostal
Deep muscles between found between the ribs
Latissimus dorsi
Two large flat muscles that cover the lower back
Gluteus maximus
Superficial muscle of the hip that forms most of the flesh of the buttock
CNS
Consists of the brain and spinal cord
PNS
Consists mainly of the nerves that extend from the brain to the spinal cord
Afferent
Consists of nerves that convey impulses to the CNS from the sensory receptors.
Sarcomere
Chains of tiny contractile units
Efferent
Carries impulses from the CNS to effector organs, the muscles , and glands
Somatic
Allows us to consciously, or voluntarily, control our skeletal muscles
Myofilaments
Filaments composing the myofibrils. Two types : actin & myosin
Actin
Contractile protein
Myosin
Principal contractile proteins found in muscles
Synaptic cleft
The fluid - filled space at a synapse between neurons
Axon
Neuron process that carries impulses away from the nerve cell body;
Neuromuscular junction
The region were a motor neuron comes into close contact with a skeletal muscle cell
Acetylcholine
A chemical transmitter substance released by certain nerve endings
Sarcolemma
Oval nuclei beneath the plasma membrane
Action potential
Electrical event occurring when a stimulus of sufficient intensity is applied to a neuron or muscle cell
Muscle teotches
A single rapid contraction of a muscle followed by relaxation
Complete tetanus
The muscle is stimulated so rapidly that no evidence of relaxation is seen and the contractions are completely smooth and sustained
Creatine phosphate
Found in muscle fibers but not other cell types
Lactic acid
The product of anaerobic metabolism , especially in muscle
Isometric exercise
Of the same length .
Flexion
Bending; the movement that decreases the angle between bones
Extension
Movement that increases the angle of a joint , straightening a flexed knee
Rotation
Movement of a bone around its longitudinal axis
Circumduction
A combination of Flexion , extension , abduction , and adduction .
Myofibrils
Long ribbonlike organelles
Orogin
Attachment of a muscle that remains relatively fixed during muscular contraction
Insertion
The movable attachment of a muscle as opposed to its origin
Platysma
A single sheet like muscle that covers the anterolateral neck
Zygomaticus
Raises corner of mouth
Intercostal
Deep muscles between found between the ribs
Latissimus dorsi
Two large flat muscles that cover the lower back
Gluteus maximus
Superficial muscle of the hip that forms most of the flesh of the buttock
CNS
Consists of the brain and spinal cord
PNS
Consists mainly of the nerves that extend from the brain to the spinal cord
Afferent
Consists of nerves that convey impulses to the CNS from the sensory receptors.
Sarcomere
Chains of tiny contractile units
Efferent
Carries impulses from the CNS to effector organs, the muscles , and glands
Somatic
Allows us to consciously, or voluntarily, control our skeletal muscles
Autonomic
Regulates events that are autonomic or involuntary
Myofilaments
Filaments composing the myofibrils. Two types : actin & myosin
Actin
Contractile protein
Myosin
Principal contractile proteins found in muscles
Synaptic cleft
The fluid - filled space at a synapse between neurons
Axon
Neuron process that carries impulses away from the nerve cell body;
Neuromuscular junction
The region were a motor neuron comes into close contact with a skeletal muscle cell
Acetylcholine
A chemical transmitter substance released by certain nerve endings
Sarcolemma
Oval nuclei beneath the plasma membrane
Action potential
Electrical event occurring when a stimulus of sufficient intensity is applied to a neuron or muscle cell
Muscle teotches
A single rapid contraction of a muscle followed by relaxation
Complete tetanus
The muscle is stimulated so rapidly that no evidence of relaxation is seen and the contractions are completely smooth and sustained
Creatine phosphate
Found in muscle fibers but not other cell types
Lactic acid
The product of anaerobic metabolism , especially in muscle
Isometric exercise
Of the same length .
Flexion
Bending; the movement that decreases the angle between bones
Extension
Movement that increases the angle of a joint , straightening a flexed knee
Rotation
Movement of a bone around its longitudinal axis
Circumduction
A combination of Flexion , extension , abduction , and adduction .
Myofibrils
Long ribbonlike organelles
Orogin
Attachment of a muscle that remains relatively fixed during muscular contraction
Insertion
The movable attachment of a muscle as opposed to its origin
Platysma
A single sheet like muscle that covers the anterolateral neck
Zygomaticus
Raises corner of mouth
Intercostal
Deep muscles between found between the ribs
Latissimus dorsi
Two large flat muscles that cover the lower back
Gluteus maximus
Superficial muscle of the hip that forms most of the flesh of the buttock
CNS
Consists of the brain and spinal cord
PNS
Consists mainly of the nerves that extend from the brain to the spinal cord
Afferent
Consists of nerves that convey impulses to the CNS from the sensory receptors.
Sarcomere
Chains of tiny contractile units
Efferent
Carries impulses from the CNS to effector organs, the muscles , and glands
Somatic
Allows us to consciously, or voluntarily, control our skeletal muscles
Autonomic
Regulates events that are autonomic or involuntary
Neitoglia
Cells that generally support, insulate, and protect the delicate neurons
Myofilaments
Filaments composing the myofibrils. Two types : actin & myosin
Actin
Contractile protein
Myosin
Principal contractile proteins found in muscles
Synaptic cleft
The fluid - filled space at a synapse between neurons
Axon
Neuron process that carries impulses away from the nerve cell body;
Neuromuscular junction
The region were a motor neuron comes into close contact with a skeletal muscle cell
Acetylcholine
A chemical transmitter substance released by certain nerve endings
Sarcolemma
Oval nuclei beneath the plasma membrane
Action potential
Electrical event occurring when a stimulus of sufficient intensity is applied to a neuron or muscle cell
Muscle teotches
A single rapid contraction of a muscle followed by relaxation
Complete tetanus
The muscle is stimulated so rapidly that no evidence of relaxation is seen and the contractions are completely smooth and sustained
Creatine phosphate
Found in muscle fibers but not other cell types
Lactic acid
The product of anaerobic metabolism , especially in muscle
Isometric exercise
Of the same length .
Flexion
Bending; the movement that decreases the angle between bones
Extension
Movement that increases the angle of a joint , straightening a flexed knee
Rotation
Movement of a bone around its longitudinal axis
Circumduction
A combination of Flexion , extension , abduction , and adduction .
Myofibrils
Long ribbonlike organelles
Orogin
Attachment of a muscle that remains relatively fixed during muscular contraction
Insertion
The movable attachment of a muscle as opposed to its origin
Platysma
A single sheet like muscle that covers the anterolateral neck
Zygomaticus
Raises corner of mouth
Intercostal
Deep muscles between found between the ribs
Latissimus dorsi
Two large flat muscles that cover the lower back
Gluteus maximus
Superficial muscle of the hip that forms most of the flesh of the buttock
CNS
Consists of the brain and spinal cord
PNS
Consists mainly of the nerves that extend from the brain to the spinal cord
Afferent
Consists of nerves that convey impulses to the CNS from the sensory receptors.
Sarcomere
Chains of tiny contractile units
Efferent
Carries impulses from the CNS to effector organs, the muscles , and glands
Somatic
Allows us to consciously, or voluntarily, control our skeletal muscles
Autonomic
Regulates events that are autonomic or involuntary
Neitoglia
Cells that generally support, insulate, and protect the delicate neurons
Microglia
Spider like phagocytes that dispose of debris , including dead brain cells and bacteria
Myofilaments
Filaments composing the myofibrils. Two types : actin & myosin
Actin
Contractile protein
Myosin
Principal contractile proteins found in muscles
Synaptic cleft
The fluid - filled space at a synapse between neurons
Axon
Neuron process that carries impulses away from the nerve cell body;
Neuromuscular junction
The region were a motor neuron comes into close contact with a skeletal muscle cell
Acetylcholine
A chemical transmitter substance released by certain nerve endings
Sarcolemma
Oval nuclei beneath the plasma membrane
Action potential
Electrical event occurring when a stimulus of sufficient intensity is applied to a neuron or muscle cell
Muscle teotches
A single rapid contraction of a muscle followed by relaxation
Complete tetanus
The muscle is stimulated so rapidly that no evidence of relaxation is seen and the contractions are completely smooth and sustained
Creatine phosphate
Found in muscle fibers but not other cell types
Lactic acid
The product of anaerobic metabolism , especially in muscle
Isometric exercise
Of the same length .
Flexion
Bending; the movement that decreases the angle between bones
Extension
Movement that increases the angle of a joint , straightening a flexed knee
Rotation
Movement of a bone around its longitudinal axis
Circumduction
A combination of Flexion , extension , abduction , and adduction .
Myofibrils
Long ribbonlike organelles
Orogin
Attachment of a muscle that remains relatively fixed during muscular contraction
Insertion
The movable attachment of a muscle as opposed to its origin
Platysma
A single sheet like muscle that covers the anterolateral neck
Zygomaticus
Raises corner of mouth
Intercostal
Deep muscles between found between the ribs
Latissimus dorsi
Two large flat muscles that cover the lower back
Gluteus maximus
Superficial muscle of the hip that forms most of the flesh of the buttock
CNS
Consists of the brain and spinal cord
PNS
Consists mainly of the nerves that extend from the brain to the spinal cord
Afferent
Consists of nerves that convey impulses to the CNS from the sensory receptors.
Sarcomere
Chains of tiny contractile units
Efferent
Carries impulses from the CNS to effector organs, the muscles , and glands
Somatic
Allows us to consciously, or voluntarily, control our skeletal muscles
Autonomic
Regulates events that are autonomic or involuntary
Neitoglia
Cells that generally support, insulate, and protect the delicate neurons
Microglia
Spider like phagocytes that dispose of debris , including dead brain cells and bacteria
Oligodendrocytes
Glia that wrap their flat extensions tightly around the nerve fiber
Myofilaments
Filaments composing the myofibrils. Two types : actin & myosin
Actin
Contractile protein
Myosin
Principal contractile proteins found in muscles
Synaptic cleft
The fluid - filled space at a synapse between neurons
Axon
Neuron process that carries impulses away from the nerve cell body;
Neuromuscular junction
The region were a motor neuron comes into close contact with a skeletal muscle cell
Acetylcholine
A chemical transmitter substance released by certain nerve endings
Sarcolemma
Oval nuclei beneath the plasma membrane
Action potential
Electrical event occurring when a stimulus of sufficient intensity is applied to a neuron or muscle cell
Muscle teotches
A single rapid contraction of a muscle followed by relaxation
Complete tetanus
The muscle is stimulated so rapidly that no evidence of relaxation is seen and the contractions are completely smooth and sustained
Creatine phosphate
Found in muscle fibers but not other cell types
Lactic acid
The product of anaerobic metabolism , especially in muscle
Isometric exercise
Of the same length .
Flexion
Bending; the movement that decreases the angle between bones
Extension
Movement that increases the angle of a joint , straightening a flexed knee
Rotation
Movement of a bone around its longitudinal axis
Circumduction
A combination of Flexion , extension , abduction , and adduction .
Myofibrils
Long ribbonlike organelles
Orogin
Attachment of a muscle that remains relatively fixed during muscular contraction
Insertion
The movable attachment of a muscle as opposed to its origin
Platysma
A single sheet like muscle that covers the anterolateral neck
Zygomaticus
Raises corner of mouth
Intercostal
Deep muscles between found between the ribs
Latissimus dorsi
Two large flat muscles that cover the lower back
Gluteus maximus
Superficial muscle of the hip that forms most of the flesh of the buttock
CNS
Consists of the brain and spinal cord
PNS
Consists mainly of the nerves that extend from the brain to the spinal cord
Afferent
Consists of nerves that convey impulses to the CNS from the sensory receptors.
Sarcomere
Chains of tiny contractile units
Efferent
Carries impulses from the CNS to effector organs, the muscles , and glands
Somatic
Allows us to consciously, or voluntarily, control our skeletal muscles
Autonomic
Regulates events that are autonomic or involuntary
Neitoglia
Cells that generally support, insulate, and protect the delicate neurons
Microglia
Spider like phagocytes that dispose of debris , including dead brain cells and bacteria
Oligodendrocytes
Glia that wrap their flat extensions tightly around the nerve fiber
Schwann Cells
Form the myelin sheaths around nerve fibers that are found in the PNS
Myofilaments
Filaments composing the myofibrils. Two types : actin & myosin
Actin
Contractile protein
Myosin
Principal contractile proteins found in muscles
Synaptic cleft
The fluid - filled space at a synapse between neurons
Axon
Neuron process that carries impulses away from the nerve cell body;
Neuromuscular junction
The region were a motor neuron comes into close contact with a skeletal muscle cell
Acetylcholine
A chemical transmitter substance released by certain nerve endings
Sarcolemma
Oval nuclei beneath the plasma membrane
Action potential
Electrical event occurring when a stimulus of sufficient intensity is applied to a neuron or muscle cell
Muscle teotches
A single rapid contraction of a muscle followed by relaxation
Complete tetanus
The muscle is stimulated so rapidly that no evidence of relaxation is seen and the contractions are completely smooth and sustained
Creatine phosphate
Found in muscle fibers but not other cell types
Lactic acid
The product of anaerobic metabolism , especially in muscle
Isometric exercise
Of the same length .
Flexion
Bending; the movement that decreases the angle between bones
Extension
Movement that increases the angle of a joint , straightening a flexed knee
Rotation
Movement of a bone around its longitudinal axis
Circumduction
A combination of Flexion , extension , abduction , and adduction .
Myofibrils
Long ribbonlike organelles
Orogin
Attachment of a muscle that remains relatively fixed during muscular contraction
Insertion
The movable attachment of a muscle as opposed to its origin
Platysma
A single sheet like muscle that covers the anterolateral neck
Zygomaticus
Raises corner of mouth
Intercostal
Deep muscles between found between the ribs
Latissimus dorsi
Two large flat muscles that cover the lower back
Gluteus maximus
Superficial muscle of the hip that forms most of the flesh of the buttock
CNS
Consists of the brain and spinal cord
PNS
Consists mainly of the nerves that extend from the brain to the spinal cord
Afferent
Consists of nerves that convey impulses to the CNS from the sensory receptors.
Sarcomere
Chains of tiny contractile units
Efferent
Carries impulses from the CNS to effector organs, the muscles , and glands
Somatic
Allows us to consciously, or voluntarily, control our skeletal muscles
Autonomic
Regulates events that are autonomic or involuntary
Neitoglia
Cells that generally support, insulate, and protect the delicate neurons
Microglia
Spider like phagocytes that dispose of debris , including dead brain cells and bacteria
Oligodendrocytes
Glia that wrap their flat extensions tightly around the nerve fiber
Schwann Cells
Form the myelin sheaths around nerve fibers that are found in the PNS
Nissl substance
Intermediate filaments that are important in maintaining cell shape
Myofilaments
Filaments composing the myofibrils. Two types : actin & myosin
Actin
Contractile protein
Myosin
Principal contractile proteins found in muscles
Synaptic cleft
The fluid - filled space at a synapse between neurons
Axon
Neuron process that carries impulses away from the nerve cell body;
Neuromuscular junction
The region were a motor neuron comes into close contact with a skeletal muscle cell
Acetylcholine
A chemical transmitter substance released by certain nerve endings
Sarcolemma
Oval nuclei beneath the plasma membrane
Action potential
Electrical event occurring when a stimulus of sufficient intensity is applied to a neuron or muscle cell
Muscle teotches
A single rapid contraction of a muscle followed by relaxation
Complete tetanus
The muscle is stimulated so rapidly that no evidence of relaxation is seen and the contractions are completely smooth and sustained
Creatine phosphate
Found in muscle fibers but not other cell types
Lactic acid
The product of anaerobic metabolism , especially in muscle
Isometric exercise
Of the same length .
Flexion
Bending; the movement that decreases the angle between bones
Extension
Movement that increases the angle of a joint , straightening a flexed knee
Rotation
Movement of a bone around its longitudinal axis
Circumduction
A combination of Flexion , extension , abduction , and adduction .
Myofibrils
Long ribbonlike organelles
Orogin
Attachment of a muscle that remains relatively fixed during muscular contraction
Insertion
The movable attachment of a muscle as opposed to its origin
Platysma
A single sheet like muscle that covers the anterolateral neck
Zygomaticus
Raises corner of mouth
Intercostal
Deep muscles between found between the ribs
Latissimus dorsi
Two large flat muscles that cover the lower back
Gluteus maximus
Superficial muscle of the hip that forms most of the flesh of the buttock
CNS
Consists of the brain and spinal cord
PNS
Consists mainly of the nerves that extend from the brain to the spinal cord
Afferent
Consists of nerves that convey impulses to the CNS from the sensory receptors.
Sarcomere
Chains of tiny contractile units
Efferent
Carries impulses from the CNS to effector organs, the muscles , and glands
Somatic
Allows us to consciously, or voluntarily, control our skeletal muscles
Autonomic
Regulates events that are autonomic or involuntary
Neitoglia
Cells that generally support, insulate, and protect the delicate neurons
Microglia
Spider like phagocytes that dispose of debris , including dead brain cells and bacteria
Oligodendrocytes
Glia that wrap their flat extensions tightly around the nerve fiber
Schwann Cells
Form the myelin sheaths around nerve fibers that are found in the PNS
Nissl substance
Intermediate filaments that are important in maintaining cell shape
Dendrites
Neuron processes that convey incoming messages
Myofilaments
Filaments composing the myofibrils. Two types : actin & myosin
Actin
Contractile protein
Myosin
Principal contractile proteins found in muscles
Synaptic cleft
The fluid - filled space at a synapse between neurons
Axon
Neuron process that carries impulses away from the nerve cell body;
Neuromuscular junction
The region were a motor neuron comes into close contact with a skeletal muscle cell
Acetylcholine
A chemical transmitter substance released by certain nerve endings
Sarcolemma
Oval nuclei beneath the plasma membrane
Action potential
Electrical event occurring when a stimulus of sufficient intensity is applied to a neuron or muscle cell
Muscle teotches
A single rapid contraction of a muscle followed by relaxation
Complete tetanus
The muscle is stimulated so rapidly that no evidence of relaxation is seen and the contractions are completely smooth and sustained
Creatine phosphate
Found in muscle fibers but not other cell types
Lactic acid
The product of anaerobic metabolism , especially in muscle
Isometric exercise
Of the same length .
Flexion
Bending; the movement that decreases the angle between bones
Extension
Movement that increases the angle of a joint , straightening a flexed knee
Rotation
Movement of a bone around its longitudinal axis
Circumduction
A combination of Flexion , extension , abduction , and adduction .
Myofibrils
Long ribbonlike organelles
Orogin
Attachment of a muscle that remains relatively fixed during muscular contraction
Insertion
The movable attachment of a muscle as opposed to its origin
Platysma
A single sheet like muscle that covers the anterolateral neck
Zygomaticus
Raises corner of mouth
Intercostal
Deep muscles between found between the ribs
Latissimus dorsi
Two large flat muscles that cover the lower back
Gluteus maximus
Superficial muscle of the hip that forms most of the flesh of the buttock
CNS
Consists of the brain and spinal cord
PNS
Consists mainly of the nerves that extend from the brain to the spinal cord
Afferent
Consists of nerves that convey impulses to the CNS from the sensory receptors.
Sarcomere
Chains of tiny contractile units
Efferent
Carries impulses from the CNS to effector organs, the muscles , and glands
Somatic
Allows us to consciously, or voluntarily, control our skeletal muscles
Autonomic
Regulates events that are autonomic or involuntary
Neitoglia
Cells that generally support, insulate, and protect the delicate neurons
Microglia
Spider like phagocytes that dispose of debris , including dead brain cells and bacteria
Oligodendrocytes
Glia that wrap their flat extensions tightly around the nerve fiber
Schwann Cells
Form the myelin sheaths around nerve fibers that are found in the PNS
Nissl substance
Intermediate filaments that are important in maintaining cell shape
Dendrites
Neuron processes that convey incoming messages
Myelin
Long nerve fibers are covered with a whitish fatty material
Myofilaments
Filaments composing the myofibrils. Two types : actin & myosin
Actin
Contractile protein
Myosin
Principal contractile proteins found in muscles
Synaptic cleft
The fluid - filled space at a synapse between neurons
Axon
Neuron process that carries impulses away from the nerve cell body;
Neuromuscular junction
The region were a motor neuron comes into close contact with a skeletal muscle cell
Acetylcholine
A chemical transmitter substance released by certain nerve endings
Sarcolemma
Oval nuclei beneath the plasma membrane
Action potential
Electrical event occurring when a stimulus of sufficient intensity is applied to a neuron or muscle cell
Muscle teotches
A single rapid contraction of a muscle followed by relaxation
Complete tetanus
The muscle is stimulated so rapidly that no evidence of relaxation is seen and the contractions are completely smooth and sustained
Creatine phosphate
Found in muscle fibers but not other cell types
Lactic acid
The product of anaerobic metabolism , especially in muscle
Isometric exercise
Of the same length .
Flexion
Bending; the movement that decreases the angle between bones
Extension
Movement that increases the angle of a joint , straightening a flexed knee
Rotation
Movement of a bone around its longitudinal axis
Circumduction
A combination of Flexion , extension , abduction , and adduction .
Myofibrils
Long ribbonlike organelles
Orogin
Attachment of a muscle that remains relatively fixed during muscular contraction
Insertion
The movable attachment of a muscle as opposed to its origin
Platysma
A single sheet like muscle that covers the anterolateral neck
Zygomaticus
Raises corner of mouth
Intercostal
Deep muscles between found between the ribs
Latissimus dorsi
Two large flat muscles that cover the lower back
Gluteus maximus
Superficial muscle of the hip that forms most of the flesh of the buttock
CNS
Consists of the brain and spinal cord
PNS
Consists mainly of the nerves that extend from the brain to the spinal cord
Afferent
Consists of nerves that convey impulses to the CNS from the sensory receptors.
Sarcomere
Chains of tiny contractile units
Efferent
Carries impulses from the CNS to effector organs, the muscles , and glands
Somatic
Allows us to consciously, or voluntarily, control our skeletal muscles
Autonomic
Regulates events that are autonomic or involuntary
Neitoglia
Cells that generally support, insulate, and protect the delicate neurons
Microglia
Spider like phagocytes that dispose of debris , including dead brain cells and bacteria
Oligodendrocytes
Glia that wrap their flat extensions tightly around the nerve fiber
Schwann Cells
Form the myelin sheaths around nerve fibers that are found in the PNS
Nissl substance
Intermediate filaments that are important in maintaining cell shape
Dendrites
Neuron processes that convey incoming messages
Myelin
Long nerve fibers are covered with a whitish fatty material
Myofilaments
Filaments composing the myofibrils. Two types : actin & myosin
Nodes of ranvier
Gaps or indentations
Actin
Contractile protein
Myosin
Principal contractile proteins found in muscles
Synaptic cleft
The fluid - filled space at a synapse between neurons
Axon
Neuron process that carries impulses away from the nerve cell body;
Neuromuscular junction
The region were a motor neuron comes into close contact with a skeletal muscle cell
Acetylcholine
A chemical transmitter substance released by certain nerve endings
Sarcolemma
Oval nuclei beneath the plasma membrane
Action potential
Electrical event occurring when a stimulus of sufficient intensity is applied to a neuron or muscle cell
Muscle teotches
A single rapid contraction of a muscle followed by relaxation
Complete tetanus
The muscle is stimulated so rapidly that no evidence of relaxation is seen and the contractions are completely smooth and sustained
Creatine phosphate
Found in muscle fibers but not other cell types
Lactic acid
The product of anaerobic metabolism , especially in muscle
Isometric exercise
Of the same length .
Flexion
Bending; the movement that decreases the angle between bones
Extension
Movement that increases the angle of a joint , straightening a flexed knee
Rotation
Movement of a bone around its longitudinal axis
Circumduction
A combination of Flexion , extension , abduction , and adduction .
Myofibrils
Long ribbonlike organelles
Orogin
Attachment of a muscle that remains relatively fixed during muscular contraction
Insertion
The movable attachment of a muscle as opposed to its origin
Platysma
A single sheet like muscle that covers the anterolateral neck
Zygomaticus
Raises corner of mouth
Intercostal
Deep muscles between found between the ribs
Latissimus dorsi
Two large flat muscles that cover the lower back
Gluteus maximus
Superficial muscle of the hip that forms most of the flesh of the buttock
CNS
Consists of the brain and spinal cord
PNS
Consists mainly of the nerves that extend from the brain to the spinal cord
Afferent
Consists of nerves that convey impulses to the CNS from the sensory receptors.
Sarcomere
Chains of tiny contractile units
Efferent
Carries impulses from the CNS to effector organs, the muscles , and glands
Somatic
Allows us to consciously, or voluntarily, control our skeletal muscles
Autonomic
Regulates events that are autonomic or involuntary
Neitoglia
Cells that generally support, insulate, and protect the delicate neurons
Microglia
Spider like phagocytes that dispose of debris , including dead brain cells and bacteria
Oligodendrocytes
Glia that wrap their flat extensions tightly around the nerve fiber
Schwann Cells
Form the myelin sheaths around nerve fibers that are found in the PNS
Nissl substance
Intermediate filaments that are important in maintaining cell shape
Dendrites
Neuron processes that convey incoming messages
Myelin
Long nerve fibers are covered with a whitish fatty material
Myofilaments
Filaments composing the myofibrils. Two types : actin & myosin
Nodes of ranvier
Gaps or indentations
White matter
Dense collections of myelinated fibers
Actin
Contractile protein
Myosin
Principal contractile proteins found in muscles
Synaptic cleft
The fluid - filled space at a synapse between neurons
Axon
Neuron process that carries impulses away from the nerve cell body;
Neuromuscular junction
The region were a motor neuron comes into close contact with a skeletal muscle cell
Acetylcholine
A chemical transmitter substance released by certain nerve endings
Sarcolemma
Oval nuclei beneath the plasma membrane
Action potential
Electrical event occurring when a stimulus of sufficient intensity is applied to a neuron or muscle cell
Muscle teotches
A single rapid contraction of a muscle followed by relaxation
Complete tetanus
The muscle is stimulated so rapidly that no evidence of relaxation is seen and the contractions are completely smooth and sustained
Creatine phosphate
Found in muscle fibers but not other cell types
Lactic acid
The product of anaerobic metabolism , especially in muscle
Isometric exercise
Of the same length .
Flexion
Bending; the movement that decreases the angle between bones
Extension
Movement that increases the angle of a joint , straightening a flexed knee
Rotation
Movement of a bone around its longitudinal axis
Circumduction
A combination of Flexion , extension , abduction , and adduction .
Myofibrils
Long ribbonlike organelles
Orogin
Attachment of a muscle that remains relatively fixed during muscular contraction
Insertion
The movable attachment of a muscle as opposed to its origin
Platysma
A single sheet like muscle that covers the anterolateral neck
Zygomaticus
Raises corner of mouth
Intercostal
Deep muscles between found between the ribs
Latissimus dorsi
Two large flat muscles that cover the lower back
Gluteus maximus
Superficial muscle of the hip that forms most of the flesh of the buttock
CNS
Consists of the brain and spinal cord
PNS
Consists mainly of the nerves that extend from the brain to the spinal cord
Afferent
Consists of nerves that convey impulses to the CNS from the sensory receptors.
Sarcomere
Chains of tiny contractile units
Efferent
Carries impulses from the CNS to effector organs, the muscles , and glands
Somatic
Allows us to consciously, or voluntarily, control our skeletal muscles
Autonomic
Regulates events that are autonomic or involuntary
Neitoglia
Cells that generally support, insulate, and protect the delicate neurons
Microglia
Spider like phagocytes that dispose of debris , including dead brain cells and bacteria
Oligodendrocytes
Glia that wrap their flat extensions tightly around the nerve fiber
Schwann Cells
Form the myelin sheaths around nerve fibers that are found in the PNS
Nissl substance
Intermediate filaments that are important in maintaining cell shape
Dendrites
Neuron processes that convey incoming messages
Myelin
Long nerve fibers are covered with a whitish fatty material
Myofilaments
Filaments composing the myofibrils. Two types : actin & myosin
Nodes of ranvier
Gaps or indentations
White matter
Dense collections of myelinated fibers
Grey matter
Contains mostly unmyelinated fibers and cell bodies
Actin
Contractile protein
Myosin
Principal contractile proteins found in muscles
Synaptic cleft
The fluid - filled space at a synapse between neurons
Axon
Neuron process that carries impulses away from the nerve cell body;
Neuromuscular junction
The region were a motor neuron comes into close contact with a skeletal muscle cell
Acetylcholine
A chemical transmitter substance released by certain nerve endings
Sarcolemma
Oval nuclei beneath the plasma membrane
Action potential
Electrical event occurring when a stimulus of sufficient intensity is applied to a neuron or muscle cell
Muscle teotches
A single rapid contraction of a muscle followed by relaxation
Complete tetanus
The muscle is stimulated so rapidly that no evidence of relaxation is seen and the contractions are completely smooth and sustained
Creatine phosphate
Found in muscle fibers but not other cell types
Lactic acid
The product of anaerobic metabolism , especially in muscle
Isometric exercise
Of the same length .
Flexion
Bending; the movement that decreases the angle between bones
Extension
Movement that increases the angle of a joint , straightening a flexed knee
Rotation
Movement of a bone around its longitudinal axis
Circumduction
A combination of Flexion , extension , abduction , and adduction .
Myofibrils
Long ribbonlike organelles
Orogin
Attachment of a muscle that remains relatively fixed during muscular contraction
Insertion
The movable attachment of a muscle as opposed to its origin
Platysma
A single sheet like muscle that covers the anterolateral neck
Zygomaticus
Raises corner of mouth
Intercostal
Deep muscles between found between the ribs
Latissimus dorsi
Two large flat muscles that cover the lower back
Gluteus maximus
Superficial muscle of the hip that forms most of the flesh of the buttock
CNS
Consists of the brain and spinal cord
PNS
Consists mainly of the nerves that extend from the brain to the spinal cord
Afferent
Consists of nerves that convey impulses to the CNS from the sensory receptors.
Sarcomere
Chains of tiny contractile units
Efferent
Carries impulses from the CNS to effector organs, the muscles , and glands
Somatic
Allows us to consciously, or voluntarily, control our skeletal muscles
Autonomic
Regulates events that are autonomic or involuntary
Neitoglia
Cells that generally support, insulate, and protect the delicate neurons
Microglia
Spider like phagocytes that dispose of debris , including dead brain cells and bacteria
Oligodendrocytes
Glia that wrap their flat extensions tightly around the nerve fiber
Schwann Cells
Form the myelin sheaths around nerve fibers that are found in the PNS
Nissl substance
Intermediate filaments that are important in maintaining cell shape
Dendrites
Neuron processes that convey incoming messages
Myelin
Long nerve fibers are covered with a whitish fatty material
Myofilaments
Filaments composing the myofibrils. Two types : actin & myosin
Nodes of ranvier
Gaps or indentations
White matter
Dense collections of myelinated fibers
Grey matter
Contains mostly unmyelinated fibers and cell bodies
Association neurons
Connect the motor and sensory neurons in neural pathways
Actin
Contractile protein
Myosin
Principal contractile proteins found in muscles
Synaptic cleft
The fluid - filled space at a synapse between neurons
Axon
Neuron process that carries impulses away from the nerve cell body;
Neuromuscular junction
The region were a motor neuron comes into close contact with a skeletal muscle cell
Acetylcholine
A chemical transmitter substance released by certain nerve endings
Sarcolemma
Oval nuclei beneath the plasma membrane
Action potential
Electrical event occurring when a stimulus of sufficient intensity is applied to a neuron or muscle cell
Muscle teotches
A single rapid contraction of a muscle followed by relaxation
Complete tetanus
The muscle is stimulated so rapidly that no evidence of relaxation is seen and the contractions are completely smooth and sustained
Creatine phosphate
Found in muscle fibers but not other cell types
Lactic acid
The product of anaerobic metabolism , especially in muscle
Isometric exercise
Of the same length .
Flexion
Bending; the movement that decreases the angle between bones
Extension
Movement that increases the angle of a joint , straightening a flexed knee
Rotation
Movement of a bone around its longitudinal axis
Circumduction
A combination of Flexion , extension , abduction , and adduction .
Myofibrils
Long ribbonlike organelles
Orogin
Attachment of a muscle that remains relatively fixed during muscular contraction
Insertion
The movable attachment of a muscle as opposed to its origin
Platysma
A single sheet like muscle that covers the anterolateral neck
Zygomaticus
Raises corner of mouth
Intercostal
Deep muscles between found between the ribs
Latissimus dorsi
Two large flat muscles that cover the lower back
Gluteus maximus
Superficial muscle of the hip that forms most of the flesh of the buttock
CNS
Consists of the brain and spinal cord
PNS
Consists mainly of the nerves that extend from the brain to the spinal cord
Afferent
Consists of nerves that convey impulses to the CNS from the sensory receptors.
Sarcomere
Chains of tiny contractile units
Efferent
Carries impulses from the CNS to effector organs, the muscles , and glands
Somatic
Allows us to consciously, or voluntarily, control our skeletal muscles
Autonomic
Regulates events that are autonomic or involuntary
Neitoglia
Cells that generally support, insulate, and protect the delicate neurons
Microglia
Spider like phagocytes that dispose of debris , including dead brain cells and bacteria
Oligodendrocytes
Glia that wrap their flat extensions tightly around the nerve fiber
Schwann Cells
Form the myelin sheaths around nerve fibers that are found in the PNS
Nissl substance
Intermediate filaments that are important in maintaining cell shape
Dendrites
Neuron processes that convey incoming messages
Myelin
Long nerve fibers are covered with a whitish fatty material
Myofilaments
Filaments composing the myofibrils. Two types : actin & myosin
Nodes of ranvier
Gaps or indentations
White matter
Dense collections of myelinated fibers
Grey matter
Contains mostly unmyelinated fibers and cell bodies
Association neurons
Connect the motor and sensory neurons in neural pathways
Bipolar
An axon and a dendrite
Actin
Contractile protein
Myosin
Principal contractile proteins found in muscles
Synaptic cleft
The fluid - filled space at a synapse between neurons
Axon
Neuron process that carries impulses away from the nerve cell body;
Neuromuscular junction
The region were a motor neuron comes into close contact with a skeletal muscle cell
Acetylcholine
A chemical transmitter substance released by certain nerve endings
Sarcolemma
Oval nuclei beneath the plasma membrane
Action potential
Electrical event occurring when a stimulus of sufficient intensity is applied to a neuron or muscle cell
Muscle teotches
A single rapid contraction of a muscle followed by relaxation
Complete tetanus
The muscle is stimulated so rapidly that no evidence of relaxation is seen and the contractions are completely smooth and sustained
Creatine phosphate
Found in muscle fibers but not other cell types
Lactic acid
The product of anaerobic metabolism , especially in muscle
Isometric exercise
Of the same length .
Flexion
Bending; the movement that decreases the angle between bones
Extension
Movement that increases the angle of a joint , straightening a flexed knee
Rotation
Movement of a bone around its longitudinal axis
Circumduction
A combination of Flexion , extension , abduction , and adduction .
Myofibrils
Long ribbonlike organelles
Orogin
Attachment of a muscle that remains relatively fixed during muscular contraction
Insertion
The movable attachment of a muscle as opposed to its origin
Platysma
A single sheet like muscle that covers the anterolateral neck
Zygomaticus
Raises corner of mouth
Intercostal
Deep muscles between found between the ribs
Latissimus dorsi
Two large flat muscles that cover the lower back
Gluteus maximus
Superficial muscle of the hip that forms most of the flesh of the buttock
CNS
Consists of the brain and spinal cord
PNS
Consists mainly of the nerves that extend from the brain to the spinal cord
Afferent
Consists of nerves that convey impulses to the CNS from the sensory receptors.
Sarcomere
Chains of tiny contractile units
Efferent
Carries impulses from the CNS to effector organs, the muscles , and glands
Somatic
Allows us to consciously, or voluntarily, control our skeletal muscles
Autonomic
Regulates events that are autonomic or involuntary
Neitoglia
Cells that generally support, insulate, and protect the delicate neurons
Microglia
Spider like phagocytes that dispose of debris , including dead brain cells and bacteria
Oligodendrocytes
Glia that wrap their flat extensions tightly around the nerve fiber
Schwann Cells
Form the myelin sheaths around nerve fibers that are found in the PNS
Nissl substance
Intermediate filaments that are important in maintaining cell shape
Dendrites
Neuron processes that convey incoming messages
Myelin
Long nerve fibers are covered with a whitish fatty material
Myofilaments
Filaments composing the myofibrils. Two types : actin & myosin
Nodes of ranvier
Gaps or indentations
White matter
Dense collections of myelinated fibers
Grey matter
Contains mostly unmyelinated fibers and cell bodies
Association neurons
Connect the motor and sensory neurons in neural pathways
Bipolar
An axon and a dendrite
Unipolar
Single process emerging from the cell body
Actin
Contractile protein
Myosin
Principal contractile proteins found in muscles
Synaptic cleft
The fluid - filled space at a synapse between neurons
Axon
Neuron process that carries impulses away from the nerve cell body;
Neuromuscular junction
The region were a motor neuron comes into close contact with a skeletal muscle cell
Acetylcholine
A chemical transmitter substance released by certain nerve endings
Sarcolemma
Oval nuclei beneath the plasma membrane
Action potential
Electrical event occurring when a stimulus of sufficient intensity is applied to a neuron or muscle cell
Muscle teotches
A single rapid contraction of a muscle followed by relaxation
Complete tetanus
The muscle is stimulated so rapidly that no evidence of relaxation is seen and the contractions are completely smooth and sustained
Creatine phosphate
Found in muscle fibers but not other cell types
Lactic acid
The product of anaerobic metabolism , especially in muscle
Isometric exercise
Of the same length .
Flexion
Bending; the movement that decreases the angle between bones
Extension
Movement that increases the angle of a joint , straightening a flexed knee
Rotation
Movement of a bone around its longitudinal axis
Circumduction
A combination of Flexion , extension , abduction , and adduction .
Myofibrils
Long ribbonlike organelles
Orogin
Attachment of a muscle that remains relatively fixed during muscular contraction
Insertion
The movable attachment of a muscle as opposed to its origin
Platysma
A single sheet like muscle that covers the anterolateral neck
Zygomaticus
Raises corner of mouth
Intercostal
Deep muscles between found between the ribs
Latissimus dorsi
Two large flat muscles that cover the lower back
Gluteus maximus
Superficial muscle of the hip that forms most of the flesh of the buttock
CNS
Consists of the brain and spinal cord
PNS
Consists mainly of the nerves that extend from the brain to the spinal cord
Afferent
Consists of nerves that convey impulses to the CNS from the sensory receptors.
Sarcomere
Chains of tiny contractile units
Efferent
Carries impulses from the CNS to effector organs, the muscles , and glands
Somatic
Allows us to consciously, or voluntarily, control our skeletal muscles
Autonomic
Regulates events that are autonomic or involuntary
Neitoglia
Cells that generally support, insulate, and protect the delicate neurons
Microglia
Spider like phagocytes that dispose of debris , including dead brain cells and bacteria
Oligodendrocytes
Glia that wrap their flat extensions tightly around the nerve fiber
Schwann Cells
Form the myelin sheaths around nerve fibers that are found in the PNS
Nissl substance
Intermediate filaments that are important in maintaining cell shape
Dendrites
Neuron processes that convey incoming messages
Myelin
Long nerve fibers are covered with a whitish fatty material
Myofilaments
Filaments composing the myofibrils. Two types : actin & myosin
Nodes of ranvier
Gaps or indentations
White matter
Dense collections of myelinated fibers
Grey matter
Contains mostly unmyelinated fibers and cell bodies
Association neurons
Connect the motor and sensory neurons in neural pathways
Bipolar
An axon and a dendrite
Unipolar
Single process emerging from the cell body
Reflexes
Rapid predictable and involuntary responses to stimuli
Actin
Contractile protein
Myosin
Principal contractile proteins found in muscles
Synaptic cleft
The fluid - filled space at a synapse between neurons
Axon
Neuron process that carries impulses away from the nerve cell body;
Neuromuscular junction
The region were a motor neuron comes into close contact with a skeletal muscle cell
Acetylcholine
A chemical transmitter substance released by certain nerve endings
Sarcolemma
Oval nuclei beneath the plasma membrane
Action potential
Electrical event occurring when a stimulus of sufficient intensity is applied to a neuron or muscle cell
Muscle teotches
A single rapid contraction of a muscle followed by relaxation
Complete tetanus
The muscle is stimulated so rapidly that no evidence of relaxation is seen and the contractions are completely smooth and sustained
Creatine phosphate
Found in muscle fibers but not other cell types
Lactic acid
The product of anaerobic metabolism , especially in muscle
Isometric exercise
Of the same length .
Flexion
Bending; the movement that decreases the angle between bones
Extension
Movement that increases the angle of a joint , straightening a flexed knee
Rotation
Movement of a bone around its longitudinal axis
Circumduction
A combination of Flexion , extension , abduction , and adduction .
Myofibrils
Long ribbonlike organelles
Orogin
Attachment of a muscle that remains relatively fixed during muscular contraction
Insertion
The movable attachment of a muscle as opposed to its origin
Platysma
A single sheet like muscle that covers the anterolateral neck
Zygomaticus
Raises corner of mouth
Intercostal
Deep muscles between found between the ribs
Latissimus dorsi
Two large flat muscles that cover the lower back
Gluteus maximus
Superficial muscle of the hip that forms most of the flesh of the buttock
CNS
Consists of the brain and spinal cord
PNS
Consists mainly of the nerves that extend from the brain to the spinal cord
Afferent
Consists of nerves that convey impulses to the CNS from the sensory receptors.
Sarcomere
Chains of tiny contractile units
Efferent
Carries impulses from the CNS to effector organs, the muscles , and glands
Somatic
Allows us to consciously, or voluntarily, control our skeletal muscles
Autonomic
Regulates events that are autonomic or involuntary
Neitoglia
Cells that generally support, insulate, and protect the delicate neurons
Microglia
Spider like phagocytes that dispose of debris , including dead brain cells and bacteria
Oligodendrocytes
Glia that wrap their flat extensions tightly around the nerve fiber
Schwann Cells
Form the myelin sheaths around nerve fibers that are found in the PNS
Nissl substance
Intermediate filaments that are important in maintaining cell shape
Dendrites
Neuron processes that convey incoming messages
Myelin
Long nerve fibers are covered with a whitish fatty material
Myofilaments
Filaments composing the myofibrils. Two types : actin & myosin
Nodes of ranvier
Gaps or indentations
White matter
Dense collections of myelinated fibers
Grey matter
Contains mostly unmyelinated fibers and cell bodies
Association neurons
Connect the motor and sensory neurons in neural pathways
Bipolar
An axon and a dendrite
Unipolar
Single process emerging from the cell body
Reflexes
Rapid predictable and involuntary responses to stimuli
Sulci
Shallow grooves
Actin
Contractile protein
Myosin
Principal contractile proteins found in muscles
Synaptic cleft
The fluid - filled space at a synapse between neurons
Axon
Neuron process that carries impulses away from the nerve cell body;
Neuromuscular junction
The region were a motor neuron comes into close contact with a skeletal muscle cell
Acetylcholine
A chemical transmitter substance released by certain nerve endings
Sarcolemma
Oval nuclei beneath the plasma membrane
Action potential
Electrical event occurring when a stimulus of sufficient intensity is applied to a neuron or muscle cell
Muscle teotches
A single rapid contraction of a muscle followed by relaxation
Complete tetanus
The muscle is stimulated so rapidly that no evidence of relaxation is seen and the contractions are completely smooth and sustained
Creatine phosphate
Found in muscle fibers but not other cell types
Lactic acid
The product of anaerobic metabolism , especially in muscle
Isometric exercise
Of the same length .
Flexion
Bending; the movement that decreases the angle between bones
Extension
Movement that increases the angle of a joint , straightening a flexed knee
Rotation
Movement of a bone around its longitudinal axis
Circumduction
A combination of Flexion , extension , abduction , and adduction .
Myofibrils
Long ribbonlike organelles
Orogin
Attachment of a muscle that remains relatively fixed during muscular contraction
Insertion
The movable attachment of a muscle as opposed to its origin
Platysma
A single sheet like muscle that covers the anterolateral neck
Zygomaticus
Raises corner of mouth
Intercostal
Deep muscles between found between the ribs
Latissimus dorsi
Two large flat muscles that cover the lower back
Gluteus maximus
Superficial muscle of the hip that forms most of the flesh of the buttock
CNS
Consists of the brain and spinal cord
PNS
Consists mainly of the nerves that extend from the brain to the spinal cord
Afferent
Consists of nerves that convey impulses to the CNS from the sensory receptors.
Sarcomere
Chains of tiny contractile units
Efferent
Carries impulses from the CNS to effector organs, the muscles , and glands
Somatic
Allows us to consciously, or voluntarily, control our skeletal muscles
Autonomic
Regulates events that are autonomic or involuntary
Neitoglia
Cells that generally support, insulate, and protect the delicate neurons
Microglia
Spider like phagocytes that dispose of debris , including dead brain cells and bacteria
Oligodendrocytes
Glia that wrap their flat extensions tightly around the nerve fiber
Schwann Cells
Form the myelin sheaths around nerve fibers that are found in the PNS
Nissl substance
Intermediate filaments that are important in maintaining cell shape
Dendrites
Neuron processes that convey incoming messages
Myelin
Long nerve fibers are covered with a whitish fatty material
Myofilaments
Filaments composing the myofibrils. Two types : actin & myosin
Nodes of ranvier
Gaps or indentations
White matter
Dense collections of myelinated fibers
Grey matter
Contains mostly unmyelinated fibers and cell bodies
Association neurons
Connect the motor and sensory neurons in neural pathways
Bipolar
An axon and a dendrite
Unipolar
Single process emerging from the cell body
Reflexes
Rapid predictable and involuntary responses to stimuli
Sulci
Shallow grooves
Fissures
Less numerous are the deeper grooves
Actin
Contractile protein
Myosin
Principal contractile proteins found in muscles
Synaptic cleft
The fluid - filled space at a synapse between neurons
Axon
Neuron process that carries impulses away from the nerve cell body;
Neuromuscular junction
The region were a motor neuron comes into close contact with a skeletal muscle cell
Acetylcholine
A chemical transmitter substance released by certain nerve endings
Sarcolemma
Oval nuclei beneath the plasma membrane
Action potential
Electrical event occurring when a stimulus of sufficient intensity is applied to a neuron or muscle cell
Muscle teotches
A single rapid contraction of a muscle followed by relaxation
Complete tetanus
The muscle is stimulated so rapidly that no evidence of relaxation is seen and the contractions are completely smooth and sustained
Creatine phosphate
Found in muscle fibers but not other cell types
Lactic acid
The product of anaerobic metabolism , especially in muscle
Isometric exercise
Of the same length .
Flexion
Bending; the movement that decreases the angle between bones
Extension
Movement that increases the angle of a joint , straightening a flexed knee
Rotation
Movement of a bone around its longitudinal axis
Circumduction
A combination of Flexion , extension , abduction , and adduction .
Myofibrils
Long ribbonlike organelles
Orogin
Attachment of a muscle that remains relatively fixed during muscular contraction
Insertion
The movable attachment of a muscle as opposed to its origin
Platysma
A single sheet like muscle that covers the anterolateral neck
Zygomaticus
Raises corner of mouth
Intercostal
Deep muscles between found between the ribs
Latissimus dorsi
Two large flat muscles that cover the lower back
Gluteus maximus
Superficial muscle of the hip that forms most of the flesh of the buttock
CNS
Consists of the brain and spinal cord
PNS
Consists mainly of the nerves that extend from the brain to the spinal cord
Afferent
Consists of nerves that convey impulses to the CNS from the sensory receptors.
Sarcomere
Chains of tiny contractile units
Efferent
Carries impulses from the CNS to effector organs, the muscles , and glands
Somatic
Allows us to consciously, or voluntarily, control our skeletal muscles
Autonomic
Regulates events that are autonomic or involuntary
Neitoglia
Cells that generally support, insulate, and protect the delicate neurons
Microglia
Spider like phagocytes that dispose of debris , including dead brain cells and bacteria
Oligodendrocytes
Glia that wrap their flat extensions tightly around the nerve fiber
Schwann Cells
Form the myelin sheaths around nerve fibers that are found in the PNS
Nissl substance
Intermediate filaments that are important in maintaining cell shape
Dendrites
Neuron processes that convey incoming messages
Myelin
Long nerve fibers are covered with a whitish fatty material
Myofilaments
Filaments composing the myofibrils. Two types : actin & myosin
Nodes of ranvier
Gaps or indentations
White matter
Dense collections of myelinated fibers
Grey matter
Contains mostly unmyelinated fibers and cell bodies
Association neurons
Connect the motor and sensory neurons in neural pathways
Bipolar
An axon and a dendrite
Unipolar
Single process emerging from the cell body
Reflexes
Rapid predictable and involuntary responses to stimuli
Sulci
Shallow grooves
Fissures
Less numerous are the deeper grooves
Occipital lobe
Visual area
Actin
Contractile protein
Myosin
Principal contractile proteins found in muscles
Synaptic cleft
The fluid - filled space at a synapse between neurons
Axon
Neuron process that carries impulses away from the nerve cell body;
Neuromuscular junction
The region were a motor neuron comes into close contact with a skeletal muscle cell
Acetylcholine
A chemical transmitter substance released by certain nerve endings
Sarcolemma
Oval nuclei beneath the plasma membrane
Action potential
Electrical event occurring when a stimulus of sufficient intensity is applied to a neuron or muscle cell
Muscle teotches
A single rapid contraction of a muscle followed by relaxation
Complete tetanus
The muscle is stimulated so rapidly that no evidence of relaxation is seen and the contractions are completely smooth and sustained
Creatine phosphate
Found in muscle fibers but not other cell types
Lactic acid
The product of anaerobic metabolism , especially in muscle
Isometric exercise
Of the same length .
Flexion
Bending; the movement that decreases the angle between bones
Extension
Movement that increases the angle of a joint , straightening a flexed knee
Rotation
Movement of a bone around its longitudinal axis
Circumduction
A combination of Flexion , extension , abduction , and adduction .
Myofibrils
Long ribbonlike organelles
Orogin
Attachment of a muscle that remains relatively fixed during muscular contraction
Insertion
The movable attachment of a muscle as opposed to its origin
Platysma
A single sheet like muscle that covers the anterolateral neck
Zygomaticus
Raises corner of mouth
Intercostal
Deep muscles between found between the ribs
Latissimus dorsi
Two large flat muscles that cover the lower back
Gluteus maximus
Superficial muscle of the hip that forms most of the flesh of the buttock
CNS
Consists of the brain and spinal cord
PNS
Consists mainly of the nerves that extend from the brain to the spinal cord
Afferent
Consists of nerves that convey impulses to the CNS from the sensory receptors.
Sarcomere
Chains of tiny contractile units
Efferent
Carries impulses from the CNS to effector organs, the muscles , and glands
Somatic
Allows us to consciously, or voluntarily, control our skeletal muscles
Autonomic
Regulates events that are autonomic or involuntary
Neitoglia
Cells that generally support, insulate, and protect the delicate neurons
Microglia
Spider like phagocytes that dispose of debris , including dead brain cells and bacteria
Oligodendrocytes
Glia that wrap their flat extensions tightly around the nerve fiber
Schwann Cells
Form the myelin sheaths around nerve fibers that are found in the PNS
Nissl substance
Intermediate filaments that are important in maintaining cell shape
Dendrites
Neuron processes that convey incoming messages
Myelin
Long nerve fibers are covered with a whitish fatty material
Myofilaments
Filaments composing the myofibrils. Two types : actin & myosin
Nodes of ranvier
Gaps or indentations
White matter
Dense collections of myelinated fibers
Grey matter
Contains mostly unmyelinated fibers and cell bodies
Association neurons
Connect the motor and sensory neurons in neural pathways
Bipolar
An axon and a dendrite
Unipolar
Single process emerging from the cell body
Reflexes
Rapid predictable and involuntary responses to stimuli
Sulci
Shallow grooves
Fissures
Less numerous are the deeper grooves
Occipital lobe
Visual area
Actin
Contractile protein
Primary motor area
Consciously move skeletal muscles
Myosin
Principal contractile proteins found in muscles
Synaptic cleft
The fluid - filled space at a synapse between neurons
Axon
Neuron process that carries impulses away from the nerve cell body;
Neuromuscular junction
The region were a motor neuron comes into close contact with a skeletal muscle cell
Acetylcholine
A chemical transmitter substance released by certain nerve endings
Sarcolemma
Oval nuclei beneath the plasma membrane
Action potential
Electrical event occurring when a stimulus of sufficient intensity is applied to a neuron or muscle cell
Muscle teotches
A single rapid contraction of a muscle followed by relaxation
Complete tetanus
The muscle is stimulated so rapidly that no evidence of relaxation is seen and the contractions are completely smooth and sustained
Creatine phosphate
Found in muscle fibers but not other cell types
Lactic acid
The product of anaerobic metabolism , especially in muscle
Isometric exercise
Of the same length .
Flexion
Bending; the movement that decreases the angle between bones
Extension
Movement that increases the angle of a joint , straightening a flexed knee
Rotation
Movement of a bone around its longitudinal axis
Circumduction
A combination of Flexion , extension , abduction , and adduction .
Myofibrils
Long ribbonlike organelles
Orogin
Attachment of a muscle that remains relatively fixed during muscular contraction
Insertion
The movable attachment of a muscle as opposed to its origin
Platysma
A single sheet like muscle that covers the anterolateral neck
Zygomaticus
Raises corner of mouth
Intercostal
Deep muscles between found between the ribs
Latissimus dorsi
Two large flat muscles that cover the lower back
Gluteus maximus
Superficial muscle of the hip that forms most of the flesh of the buttock
CNS
Consists of the brain and spinal cord
PNS
Consists mainly of the nerves that extend from the brain to the spinal cord
Afferent
Consists of nerves that convey impulses to the CNS from the sensory receptors.
Sarcomere
Chains of tiny contractile units
Efferent
Carries impulses from the CNS to effector organs, the muscles , and glands
Somatic
Allows us to consciously, or voluntarily, control our skeletal muscles
Autonomic
Regulates events that are autonomic or involuntary
Neitoglia
Cells that generally support, insulate, and protect the delicate neurons
Microglia
Spider like phagocytes that dispose of debris , including dead brain cells and bacteria
Oligodendrocytes
Glia that wrap their flat extensions tightly around the nerve fiber
Schwann Cells
Form the myelin sheaths around nerve fibers that are found in the PNS
Nissl substance
Intermediate filaments that are important in maintaining cell shape
Dendrites
Neuron processes that convey incoming messages
Myelin
Long nerve fibers are covered with a whitish fatty material
Myofilaments
Filaments composing the myofibrils. Two types : actin & myosin
Nodes of ranvier
Gaps or indentations
White matter
Dense collections of myelinated fibers
Grey matter
Contains mostly unmyelinated fibers and cell bodies
Association neurons
Connect the motor and sensory neurons in neural pathways
Bipolar
An axon and a dendrite
Unipolar
Single process emerging from the cell body
Reflexes
Rapid predictable and involuntary responses to stimuli
Sulci
Shallow grooves
Fissures
Less numerous are the deeper grooves
Occipital lobe
Visual area
Actin
Contractile protein
Primary motor area
Consciously move skeletal muscles
Broca's area
Found at the base of the precentral gyrus
Myosin
Principal contractile proteins found in muscles
Synaptic cleft
The fluid - filled space at a synapse between neurons
Axon
Neuron process that carries impulses away from the nerve cell body;
Neuromuscular junction
The region were a motor neuron comes into close contact with a skeletal muscle cell
Acetylcholine
A chemical transmitter substance released by certain nerve endings
Sarcolemma
Oval nuclei beneath the plasma membrane
Action potential
Electrical event occurring when a stimulus of sufficient intensity is applied to a neuron or muscle cell
Muscle teotches
A single rapid contraction of a muscle followed by relaxation
Complete tetanus
The muscle is stimulated so rapidly that no evidence of relaxation is seen and the contractions are completely smooth and sustained
Creatine phosphate
Found in muscle fibers but not other cell types
Lactic acid
The product of anaerobic metabolism , especially in muscle
Isometric exercise
Of the same length .
Flexion
Bending; the movement that decreases the angle between bones
Extension
Movement that increases the angle of a joint , straightening a flexed knee
Rotation
Movement of a bone around its longitudinal axis
Circumduction
A combination of Flexion , extension , abduction , and adduction .
Myofibrils
Long ribbonlike organelles
Orogin
Attachment of a muscle that remains relatively fixed during muscular contraction
Insertion
The movable attachment of a muscle as opposed to its origin
Platysma
A single sheet like muscle that covers the anterolateral neck
Zygomaticus
Raises corner of mouth
Intercostal
Deep muscles between found between the ribs
Latissimus dorsi
Two large flat muscles that cover the lower back
Gluteus maximus
Superficial muscle of the hip that forms most of the flesh of the buttock
CNS
Consists of the brain and spinal cord
PNS
Consists mainly of the nerves that extend from the brain to the spinal cord
Afferent
Consists of nerves that convey impulses to the CNS from the sensory receptors.
Sarcomere
Chains of tiny contractile units
Efferent
Carries impulses from the CNS to effector organs, the muscles , and glands
Somatic
Allows us to consciously, or voluntarily, control our skeletal muscles
Autonomic
Regulates events that are autonomic or involuntary
Neitoglia
Cells that generally support, insulate, and protect the delicate neurons
Microglia
Spider like phagocytes that dispose of debris , including dead brain cells and bacteria
Oligodendrocytes
Glia that wrap their flat extensions tightly around the nerve fiber
Schwann Cells
Form the myelin sheaths around nerve fibers that are found in the PNS
Nissl substance
Intermediate filaments that are important in maintaining cell shape
Dendrites
Neuron processes that convey incoming messages
Myelin
Long nerve fibers are covered with a whitish fatty material
Myofilaments
Filaments composing the myofibrils. Two types : actin & myosin
Nodes of ranvier
Gaps or indentations
White matter
Dense collections of myelinated fibers
Grey matter
Contains mostly unmyelinated fibers and cell bodies
Association neurons
Connect the motor and sensory neurons in neural pathways
Bipolar
An axon and a dendrite
Unipolar
Single process emerging from the cell body
Reflexes
Rapid predictable and involuntary responses to stimuli
Sulci
Shallow grooves
Fissures
Less numerous are the deeper grooves
Occipital lobe
Visual area
Actin
Contractile protein
Primary motor area
Consciously move skeletal muscles
Broca's area
Found at the base of the precentral gyrus
Diencephalon
Sits atop the brain stem and is enclosed by the cerebral hemispheres.
Myosin
Principal contractile proteins found in muscles
Synaptic cleft
The fluid - filled space at a synapse between neurons
Axon
Neuron process that carries impulses away from the nerve cell body;
Neuromuscular junction
The region were a motor neuron comes into close contact with a skeletal muscle cell
Acetylcholine
A chemical transmitter substance released by certain nerve endings
Sarcolemma
Oval nuclei beneath the plasma membrane
Action potential
Electrical event occurring when a stimulus of sufficient intensity is applied to a neuron or muscle cell
Muscle teotches
A single rapid contraction of a muscle followed by relaxation
Complete tetanus
The muscle is stimulated so rapidly that no evidence of relaxation is seen and the contractions are completely smooth and sustained
Creatine phosphate
Found in muscle fibers but not other cell types
Lactic acid
The product of anaerobic metabolism , especially in muscle
Isometric exercise
Of the same length .
Flexion
Bending; the movement that decreases the angle between bones
Extension
Movement that increases the angle of a joint , straightening a flexed knee
Rotation
Movement of a bone around its longitudinal axis
Circumduction
A combination of Flexion , extension , abduction , and adduction .
Myofibrils
Long ribbonlike organelles
Orogin
Attachment of a muscle that remains relatively fixed during muscular contraction
Insertion
The movable attachment of a muscle as opposed to its origin
Platysma
A single sheet like muscle that covers the anterolateral neck
Zygomaticus
Raises corner of mouth
Intercostal
Deep muscles between found between the ribs
Latissimus dorsi
Two large flat muscles that cover the lower back
Gluteus maximus
Superficial muscle of the hip that forms most of the flesh of the buttock
CNS
Consists of the brain and spinal cord
PNS
Consists mainly of the nerves that extend from the brain to the spinal cord
Afferent
Consists of nerves that convey impulses to the CNS from the sensory receptors.
Sarcomere
Chains of tiny contractile units
Efferent
Carries impulses from the CNS to effector organs, the muscles , and glands
Somatic
Allows us to consciously, or voluntarily, control our skeletal muscles
Autonomic
Regulates events that are autonomic or involuntary
Neitoglia
Cells that generally support, insulate, and protect the delicate neurons
Microglia
Spider like phagocytes that dispose of debris , including dead brain cells and bacteria
Oligodendrocytes
Glia that wrap their flat extensions tightly around the nerve fiber
Schwann Cells
Form the myelin sheaths around nerve fibers that are found in the PNS
Nissl substance
Intermediate filaments that are important in maintaining cell shape
Dendrites
Neuron processes that convey incoming messages
Myelin
Long nerve fibers are covered with a whitish fatty material
Myofilaments
Filaments composing the myofibrils. Two types : actin & myosin
Nodes of ranvier
Gaps or indentations
White matter
Dense collections of myelinated fibers
Grey matter
Contains mostly unmyelinated fibers and cell bodies
Association neurons
Connect the motor and sensory neurons in neural pathways
Bipolar
An axon and a dendrite
Unipolar
Single process emerging from the cell body
Reflexes
Rapid predictable and involuntary responses to stimuli
Sulci
Shallow grooves
Fissures
Less numerous are the deeper grooves
Occipital lobe
Visual area
Actin
Contractile protein
Primary motor area
Consciously move skeletal muscles
Broca's area
Found at the base of the precentral gyrus
Diencephalon
Sits atop the brain stem and is enclosed by the cerebral hemispheres.
Epithalamus
Forms the root of the third ventricle
Myosin
Principal contractile proteins found in muscles
Synaptic cleft
The fluid - filled space at a synapse between neurons
Axon
Neuron process that carries impulses away from the nerve cell body;
Neuromuscular junction
The region were a motor neuron comes into close contact with a skeletal muscle cell
Acetylcholine
A chemical transmitter substance released by certain nerve endings
Sarcolemma
Oval nuclei beneath the plasma membrane
Action potential
Electrical event occurring when a stimulus of sufficient intensity is applied to a neuron or muscle cell
Muscle teotches
A single rapid contraction of a muscle followed by relaxation
Complete tetanus
The muscle is stimulated so rapidly that no evidence of relaxation is seen and the contractions are completely smooth and sustained
Creatine phosphate
Found in muscle fibers but not other cell types
Lactic acid
The product of anaerobic metabolism , especially in muscle
Isometric exercise
Of the same length .
Flexion
Bending; the movement that decreases the angle between bones
Extension
Movement that increases the angle of a joint , straightening a flexed knee
Rotation
Movement of a bone around its longitudinal axis
Circumduction
A combination of Flexion , extension , abduction , and adduction .
Myofibrils
Long ribbonlike organelles
Orogin
Attachment of a muscle that remains relatively fixed during muscular contraction
Insertion
The movable attachment of a muscle as opposed to its origin
Platysma
A single sheet like muscle that covers the anterolateral neck
Zygomaticus
Raises corner of mouth
Intercostal
Deep muscles between found between the ribs
Latissimus dorsi
Two large flat muscles that cover the lower back
Gluteus maximus
Superficial muscle of the hip that forms most of the flesh of the buttock
CNS
Consists of the brain and spinal cord
PNS
Consists mainly of the nerves that extend from the brain to the spinal cord
Afferent
Consists of nerves that convey impulses to the CNS from the sensory receptors.
Sarcomere
Chains of tiny contractile units
Efferent
Carries impulses from the CNS to effector organs, the muscles , and glands
Somatic
Allows us to consciously, or voluntarily, control our skeletal muscles
Autonomic
Regulates events that are autonomic or involuntary
Neitoglia
Cells that generally support, insulate, and protect the delicate neurons
Microglia
Spider like phagocytes that dispose of debris , including dead brain cells and bacteria
Oligodendrocytes
Glia that wrap their flat extensions tightly around the nerve fiber
Schwann Cells
Form the myelin sheaths around nerve fibers that are found in the PNS
Nissl substance
Intermediate filaments that are important in maintaining cell shape
Dendrites
Neuron processes that convey incoming messages
Myelin
Long nerve fibers are covered with a whitish fatty material
Myofilaments
Filaments composing the myofibrils. Two types : actin & myosin
Nodes of ranvier
Gaps or indentations
White matter
Dense collections of myelinated fibers
Grey matter
Contains mostly unmyelinated fibers and cell bodies
Association neurons
Connect the motor and sensory neurons in neural pathways
Bipolar
An axon and a dendrite
Unipolar
Single process emerging from the cell body
Reflexes
Rapid predictable and involuntary responses to stimuli
Sulci
Shallow grooves
Fissures
Less numerous are the deeper grooves
Occipital lobe
Visual area
Actin
Contractile protein
Primary motor area
Consciously move skeletal muscles
Broca's area
Found at the base of the precentral gyrus
Diencephalon
Sits atop the brain stem and is enclosed by the cerebral hemispheres.
Epithalamus
Forms the root of the third ventricle
Brain stem
About the size of a thumb in diameter and approximately 3 inches long
Myosin
Principal contractile proteins found in muscles
Synaptic cleft
The fluid - filled space at a synapse between neurons
Axon
Neuron process that carries impulses away from the nerve cell body;
Neuromuscular junction
The region were a motor neuron comes into close contact with a skeletal muscle cell
Acetylcholine
A chemical transmitter substance released by certain nerve endings
Sarcolemma
Oval nuclei beneath the plasma membrane
Action potential
Electrical event occurring when a stimulus of sufficient intensity is applied to a neuron or muscle cell
Muscle teotches
A single rapid contraction of a muscle followed by relaxation
Complete tetanus
The muscle is stimulated so rapidly that no evidence of relaxation is seen and the contractions are completely smooth and sustained
Creatine phosphate
Found in muscle fibers but not other cell types
Lactic acid
The product of anaerobic metabolism , especially in muscle
Isometric exercise
Of the same length .
Flexion
Bending; the movement that decreases the angle between bones
Extension
Movement that increases the angle of a joint , straightening a flexed knee
Rotation
Movement of a bone around its longitudinal axis
Circumduction
A combination of Flexion , extension , abduction , and adduction .
Myofibrils
Long ribbonlike organelles
Orogin
Attachment of a muscle that remains relatively fixed during muscular contraction
Insertion
The movable attachment of a muscle as opposed to its origin
Platysma
A single sheet like muscle that covers the anterolateral neck
Zygomaticus
Raises corner of mouth
Intercostal
Deep muscles between found between the ribs
Latissimus dorsi
Two large flat muscles that cover the lower back
Gluteus maximus
Superficial muscle of the hip that forms most of the flesh of the buttock
CNS
Consists of the brain and spinal cord
PNS
Consists mainly of the nerves that extend from the brain to the spinal cord
Afferent
Consists of nerves that convey impulses to the CNS from the sensory receptors.
Sarcomere
Chains of tiny contractile units
Efferent
Carries impulses from the CNS to effector organs, the muscles , and glands
Somatic
Allows us to consciously, or voluntarily, control our skeletal muscles
Autonomic
Regulates events that are autonomic or involuntary
Neitoglia
Cells that generally support, insulate, and protect the delicate neurons
Microglia
Spider like phagocytes that dispose of debris , including dead brain cells and bacteria
Oligodendrocytes
Glia that wrap their flat extensions tightly around the nerve fiber
Schwann Cells
Form the myelin sheaths around nerve fibers that are found in the PNS
Nissl substance
Intermediate filaments that are important in maintaining cell shape
Dendrites
Neuron processes that convey incoming messages
Myelin
Long nerve fibers are covered with a whitish fatty material
Myofilaments
Filaments composing the myofibrils. Two types : actin & myosin
Nodes of ranvier
Gaps or indentations
White matter
Dense collections of myelinated fibers
Grey matter
Contains mostly unmyelinated fibers and cell bodies
Association neurons
Connect the motor and sensory neurons in neural pathways
Bipolar
An axon and a dendrite
Unipolar
Single process emerging from the cell body
Reflexes
Rapid predictable and involuntary responses to stimuli
Sulci
Shallow grooves
Fissures
Less numerous are the deeper grooves
Occipital lobe
Visual area
Actin
Contractile protein
Primary motor area
Consciously move skeletal muscles
Broca's area
Found at the base of the precentral gyrus
Diencephalon
Sits atop the brain stem and is enclosed by the cerebral hemispheres.
Epithalamus
Forms the root of the third ventricle
Brain stem
About the size of a thumb in diameter and approximately 3 inches long
Meninges
Three connective tissue membranes covering and protecting the CNS structure
Myosin
Principal contractile proteins found in muscles
Synaptic cleft
The fluid - filled space at a synapse between neurons
Axon
Neuron process that carries impulses away from the nerve cell body;
Neuromuscular junction
The region were a motor neuron comes into close contact with a skeletal muscle cell
Acetylcholine
A chemical transmitter substance released by certain nerve endings
Sarcolemma
Oval nuclei beneath the plasma membrane
Action potential
Electrical event occurring when a stimulus of sufficient intensity is applied to a neuron or muscle cell
Muscle teotches
A single rapid contraction of a muscle followed by relaxation
Complete tetanus
The muscle is stimulated so rapidly that no evidence of relaxation is seen and the contractions are completely smooth and sustained
Creatine phosphate
Found in muscle fibers but not other cell types
Lactic acid
The product of anaerobic metabolism , especially in muscle
Isometric exercise
Of the same length .
Flexion
Bending; the movement that decreases the angle between bones
Extension
Movement that increases the angle of a joint , straightening a flexed knee
Rotation
Movement of a bone around its longitudinal axis
Circumduction
A combination of Flexion , extension , abduction , and adduction .
Myofibrils
Long ribbonlike organelles
Orogin
Attachment of a muscle that remains relatively fixed during muscular contraction
Insertion
The movable attachment of a muscle as opposed to its origin
Platysma
A single sheet like muscle that covers the anterolateral neck
Zygomaticus
Raises corner of mouth
Intercostal
Deep muscles between found between the ribs
Latissimus dorsi
Two large flat muscles that cover the lower back
Gluteus maximus
Superficial muscle of the hip that forms most of the flesh of the buttock
CNS
Consists of the brain and spinal cord
PNS
Consists mainly of the nerves that extend from the brain to the spinal cord
Afferent
Consists of nerves that convey impulses to the CNS from the sensory receptors.
Sarcomere
Chains of tiny contractile units
Efferent
Carries impulses from the CNS to effector organs, the muscles , and glands
Somatic
Allows us to consciously, or voluntarily, control our skeletal muscles
Autonomic
Regulates events that are autonomic or involuntary
Neitoglia
Cells that generally support, insulate, and protect the delicate neurons
Microglia
Spider like phagocytes that dispose of debris , including dead brain cells and bacteria
Oligodendrocytes
Glia that wrap their flat extensions tightly around the nerve fiber
Schwann Cells
Form the myelin sheaths around nerve fibers that are found in the PNS
Nissl substance
Intermediate filaments that are important in maintaining cell shape
Dendrites
Neuron processes that convey incoming messages
Myelin
Long nerve fibers are covered with a whitish fatty material
Myofilaments
Filaments composing the myofibrils. Two types : actin & myosin
Nodes of ranvier
Gaps or indentations
White matter
Dense collections of myelinated fibers
Grey matter
Contains mostly unmyelinated fibers and cell bodies
Association neurons
Connect the motor and sensory neurons in neural pathways
Bipolar
An axon and a dendrite
Unipolar
Single process emerging from the cell body
Reflexes
Rapid predictable and involuntary responses to stimuli
Sulci
Shallow grooves
Fissures
Less numerous are the deeper grooves
Occipital lobe
Visual area
Actin
Contractile protein
Primary motor area
Consciously move skeletal muscles
Broca's area
Found at the base of the precentral gyrus
Diencephalon
Sits atop the brain stem and is enclosed by the cerebral hemispheres.
Epithalamus
Forms the root of the third ventricle
Brain stem
About the size of a thumb in diameter and approximately 3 inches long
Meninges
Three connective tissue membranes covering and protecting the CNS structure
Cerebrospinal fluid
Watery broth similar in its makeup to blood plasma
Myosin
Principal contractile proteins found in muscles
Synaptic cleft
The fluid - filled space at a synapse between neurons
Axon
Neuron process that carries impulses away from the nerve cell body;
Neuromuscular junction
The region were a motor neuron comes into close contact with a skeletal muscle cell
Acetylcholine
A chemical transmitter substance released by certain nerve endings
Sarcolemma
Oval nuclei beneath the plasma membrane
Action potential
Electrical event occurring when a stimulus of sufficient intensity is applied to a neuron or muscle cell
Muscle teotches
A single rapid contraction of a muscle followed by relaxation
Complete tetanus
The muscle is stimulated so rapidly that no evidence of relaxation is seen and the contractions are completely smooth and sustained
Creatine phosphate
Found in muscle fibers but not other cell types
Lactic acid
The product of anaerobic metabolism , especially in muscle
Isometric exercise
Of the same length .
Flexion
Bending; the movement that decreases the angle between bones
Extension
Movement that increases the angle of a joint , straightening a flexed knee
Rotation
Movement of a bone around its longitudinal axis
Circumduction
A combination of Flexion , extension , abduction , and adduction .
Myofibrils
Long ribbonlike organelles
Orogin
Attachment of a muscle that remains relatively fixed during muscular contraction
Insertion
The movable attachment of a muscle as opposed to its origin
Platysma
A single sheet like muscle that covers the anterolateral neck
Zygomaticus
Raises corner of mouth
Intercostal
Deep muscles between found between the ribs
Latissimus dorsi
Two large flat muscles that cover the lower back
Gluteus maximus
Superficial muscle of the hip that forms most of the flesh of the buttock
CNS
Consists of the brain and spinal cord
PNS
Consists mainly of the nerves that extend from the brain to the spinal cord
Afferent
Consists of nerves that convey impulses to the CNS from the sensory receptors.
Sarcomere
Chains of tiny contractile units
Efferent
Carries impulses from the CNS to effector organs, the muscles , and glands
Somatic
Allows us to consciously, or voluntarily, control our skeletal muscles
Autonomic
Regulates events that are autonomic or involuntary
Neitoglia
Cells that generally support, insulate, and protect the delicate neurons
Microglia
Spider like phagocytes that dispose of debris , including dead brain cells and bacteria
Oligodendrocytes
Glia that wrap their flat extensions tightly around the nerve fiber
Schwann Cells
Form the myelin sheaths around nerve fibers that are found in the PNS
Nissl substance
Intermediate filaments that are important in maintaining cell shape
Dendrites
Neuron processes that convey incoming messages
Myelin
Long nerve fibers are covered with a whitish fatty material
Myofilaments
Filaments composing the myofibrils. Two types : actin & myosin
Nodes of ranvier
Gaps or indentations
White matter
Dense collections of myelinated fibers
Grey matter
Contains mostly unmyelinated fibers and cell bodies
Association neurons
Connect the motor and sensory neurons in neural pathways
Bipolar
An axon and a dendrite
Unipolar
Single process emerging from the cell body
Reflexes
Rapid predictable and involuntary responses to stimuli
Sulci
Shallow grooves
Fissures
Less numerous are the deeper grooves
Occipital lobe
Visual area
Actin
Contractile protein
Primary motor area
Consciously move skeletal muscles
Broca's area
Found at the base of the precentral gyrus
Diencephalon
Sits atop the brain stem and is enclosed by the cerebral hemispheres.
Epithalamus
Forms the root of the third ventricle
Brain stem
About the size of a thumb in diameter and approximately 3 inches long
Meninges
Three connective tissue membranes covering and protecting the CNS structure
Cerebrospinal fluid
Watery broth similar in its makeup to blood plasma
Concussion
When brain injury is slight
Myosin
Principal contractile proteins found in muscles
Synaptic cleft
The fluid - filled space at a synapse between neurons
Axon
Neuron process that carries impulses away from the nerve cell body;
Neuromuscular junction
The region were a motor neuron comes into close contact with a skeletal muscle cell
Acetylcholine
A chemical transmitter substance released by certain nerve endings
Sarcolemma
Oval nuclei beneath the plasma membrane
Action potential
Electrical event occurring when a stimulus of sufficient intensity is applied to a neuron or muscle cell
Muscle teotches
A single rapid contraction of a muscle followed by relaxation
Complete tetanus
The muscle is stimulated so rapidly that no evidence of relaxation is seen and the contractions are completely smooth and sustained
Creatine phosphate
Found in muscle fibers but not other cell types
Lactic acid
The product of anaerobic metabolism , especially in muscle
Isometric exercise
Of the same length .
Flexion
Bending; the movement that decreases the angle between bones
Extension
Movement that increases the angle of a joint , straightening a flexed knee
Rotation
Movement of a bone around its longitudinal axis
Circumduction
A combination of Flexion , extension , abduction , and adduction .
Myofibrils
Long ribbonlike organelles
Orogin
Attachment of a muscle that remains relatively fixed during muscular contraction
Insertion
The movable attachment of a muscle as opposed to its origin
Platysma
A single sheet like muscle that covers the anterolateral neck
Zygomaticus
Raises corner of mouth
Intercostal
Deep muscles between found between the ribs
Latissimus dorsi
Two large flat muscles that cover the lower back
Gluteus maximus
Superficial muscle of the hip that forms most of the flesh of the buttock
CNS
Consists of the brain and spinal cord
PNS
Consists mainly of the nerves that extend from the brain to the spinal cord
Afferent
Consists of nerves that convey impulses to the CNS from the sensory receptors.
Sarcomere
Chains of tiny contractile units
Efferent
Carries impulses from the CNS to effector organs, the muscles , and glands
Somatic
Allows us to consciously, or voluntarily, control our skeletal muscles
Autonomic
Regulates events that are autonomic or involuntary
Neitoglia
Cells that generally support, insulate, and protect the delicate neurons
Microglia
Spider like phagocytes that dispose of debris , including dead brain cells and bacteria
Oligodendrocytes
Glia that wrap their flat extensions tightly around the nerve fiber
Schwann Cells
Form the myelin sheaths around nerve fibers that are found in the PNS
Nissl substance
Intermediate filaments that are important in maintaining cell shape
Dendrites
Neuron processes that convey incoming messages
Myelin
Long nerve fibers are covered with a whitish fatty material
Myofilaments
Filaments composing the myofibrils. Two types : actin & myosin
Nodes of ranvier
Gaps or indentations
White matter
Dense collections of myelinated fibers
Grey matter
Contains mostly unmyelinated fibers and cell bodies
Association neurons
Connect the motor and sensory neurons in neural pathways
Bipolar
An axon and a dendrite
Unipolar
Single process emerging from the cell body
Reflexes
Rapid predictable and involuntary responses to stimuli
Sulci
Shallow grooves
Fissures
Less numerous are the deeper grooves
Occipital lobe
Visual area
Actin
Contractile protein
Primary motor area
Consciously move skeletal muscles
Broca's area
Found at the base of the precentral gyrus
Diencephalon
Sits atop the brain stem and is enclosed by the cerebral hemispheres.
Epithalamus
Forms the root of the third ventricle
Brain stem
About the size of a thumb in diameter and approximately 3 inches long
Meninges
Three connective tissue membranes covering and protecting the CNS structure
Cerebrospinal fluid
Watery broth similar in its makeup to blood plasma
Concussion
When brain injury is slight
Contision
Result of marked tissue destruction
Myosin
Principal contractile proteins found in muscles
Synaptic cleft
The fluid - filled space at a synapse between neurons
Axon
Neuron process that carries impulses away from the nerve cell body;
Neuromuscular junction
The region were a motor neuron comes into close contact with a skeletal muscle cell
Acetylcholine
A chemical transmitter substance released by certain nerve endings
Sarcolemma
Oval nuclei beneath the plasma membrane
Action potential
Electrical event occurring when a stimulus of sufficient intensity is applied to a neuron or muscle cell
Muscle teotches
A single rapid contraction of a muscle followed by relaxation
Complete tetanus
The muscle is stimulated so rapidly that no evidence of relaxation is seen and the contractions are completely smooth and sustained
Creatine phosphate
Found in muscle fibers but not other cell types
Lactic acid
The product of anaerobic metabolism , especially in muscle
Isometric exercise
Of the same length .
Flexion
Bending; the movement that decreases the angle between bones
Extension
Movement that increases the angle of a joint , straightening a flexed knee
Rotation
Movement of a bone around its longitudinal axis
Circumduction
A combination of Flexion , extension , abduction , and adduction .
Myofibrils
Long ribbonlike organelles
Orogin
Attachment of a muscle that remains relatively fixed during muscular contraction
Insertion
The movable attachment of a muscle as opposed to its origin
Platysma
A single sheet like muscle that covers the anterolateral neck
Zygomaticus
Raises corner of mouth
Intercostal
Deep muscles between found between the ribs
Latissimus dorsi
Two large flat muscles that cover the lower back
Gluteus maximus
Superficial muscle of the hip that forms most of the flesh of the buttock
CNS
Consists of the brain and spinal cord
PNS
Consists mainly of the nerves that extend from the brain to the spinal cord
Afferent
Consists of nerves that convey impulses to the CNS from the sensory receptors.
Sarcomere
Chains of tiny contractile units
Efferent
Carries impulses from the CNS to effector organs, the muscles , and glands
Somatic
Allows us to consciously, or voluntarily, control our skeletal muscles
Autonomic
Regulates events that are autonomic or involuntary
Neitoglia
Cells that generally support, insulate, and protect the delicate neurons
Microglia
Spider like phagocytes that dispose of debris , including dead brain cells and bacteria
Oligodendrocytes
Glia that wrap their flat extensions tightly around the nerve fiber
Schwann Cells
Form the myelin sheaths around nerve fibers that are found in the PNS
Nissl substance
Intermediate filaments that are important in maintaining cell shape
Dendrites
Neuron processes that convey incoming messages
Myelin
Long nerve fibers are covered with a whitish fatty material
Myofilaments
Filaments composing the myofibrils. Two types : actin & myosin
Nodes of ranvier
Gaps or indentations
White matter
Dense collections of myelinated fibers
Grey matter
Contains mostly unmyelinated fibers and cell bodies
Association neurons
Connect the motor and sensory neurons in neural pathways
Bipolar
An axon and a dendrite
Unipolar
Single process emerging from the cell body
Reflexes
Rapid predictable and involuntary responses to stimuli
Sulci
Shallow grooves
Fissures
Less numerous are the deeper grooves
Occipital lobe
Visual area
Actin
Contractile protein
Primary motor area
Consciously move skeletal muscles
Broca's area
Found at the base of the precentral gyrus
Diencephalon
Sits atop the brain stem and is enclosed by the cerebral hemispheres.
Epithalamus
Forms the root of the third ventricle
Brain stem
About the size of a thumb in diameter and approximately 3 inches long
Meninges
Three connective tissue membranes covering and protecting the CNS structure
Cerebrospinal fluid
Watery broth similar in its makeup to blood plasma
Concussion
When brain injury is slight
Contision
Result of marked tissue destruction
Cerebral edema
Swelling of the brain due to inflammatory response to injury
Myosin
Principal contractile proteins found in muscles
Synaptic cleft
The fluid - filled space at a synapse between neurons
Axon
Neuron process that carries impulses away from the nerve cell body;
Neuromuscular junction
The region were a motor neuron comes into close contact with a skeletal muscle cell
Acetylcholine
A chemical transmitter substance released by certain nerve endings
Sarcolemma
Oval nuclei beneath the plasma membrane
Action potential
Electrical event occurring when a stimulus of sufficient intensity is applied to a neuron or muscle cell
Muscle teotches
A single rapid contraction of a muscle followed by relaxation
Complete tetanus
The muscle is stimulated so rapidly that no evidence of relaxation is seen and the contractions are completely smooth and sustained
Creatine phosphate
Found in muscle fibers but not other cell types
Lactic acid
The product of anaerobic metabolism , especially in muscle
Isometric exercise
Of the same length .
Flexion
Bending; the movement that decreases the angle between bones
Extension
Movement that increases the angle of a joint , straightening a flexed knee
Rotation
Movement of a bone around its longitudinal axis
Circumduction
A combination of Flexion , extension , abduction , and adduction .
Myofibrils
Long ribbonlike organelles
Orogin
Attachment of a muscle that remains relatively fixed during muscular contraction
Insertion
The movable attachment of a muscle as opposed to its origin
Platysma
A single sheet like muscle that covers the anterolateral neck
Zygomaticus
Raises corner of mouth
Intercostal
Deep muscles between found between the ribs
Latissimus dorsi
Two large flat muscles that cover the lower back
Gluteus maximus
Superficial muscle of the hip that forms most of the flesh of the buttock
CNS
Consists of the brain and spinal cord
PNS
Consists mainly of the nerves that extend from the brain to the spinal cord
Afferent
Consists of nerves that convey impulses to the CNS from the sensory receptors.
Sarcomere
Chains of tiny contractile units
Efferent
Carries impulses from the CNS to effector organs, the muscles , and glands
Somatic
Allows us to consciously, or voluntarily, control our skeletal muscles
Autonomic
Regulates events that are autonomic or involuntary
Neitoglia
Cells that generally support, insulate, and protect the delicate neurons
Microglia
Spider like phagocytes that dispose of debris , including dead brain cells and bacteria
Oligodendrocytes
Glia that wrap their flat extensions tightly around the nerve fiber
Schwann Cells
Form the myelin sheaths around nerve fibers that are found in the PNS
Nissl substance
Intermediate filaments that are important in maintaining cell shape
Dendrites
Neuron processes that convey incoming messages
Myelin
Long nerve fibers are covered with a whitish fatty material
Myofilaments
Filaments composing the myofibrils. Two types : actin & myosin
Nodes of ranvier
Gaps or indentations
White matter
Dense collections of myelinated fibers
Grey matter
Contains mostly unmyelinated fibers and cell bodies
Association neurons
Connect the motor and sensory neurons in neural pathways
Bipolar
An axon and a dendrite
Unipolar
Single process emerging from the cell body
Reflexes
Rapid predictable and involuntary responses to stimuli
Sulci
Shallow grooves
Fissures
Less numerous are the deeper grooves
Occipital lobe
Visual area
Actin
Contractile protein
Primary motor area
Consciously move skeletal muscles
Broca's area
Found at the base of the precentral gyrus
Diencephalon
Sits atop the brain stem and is enclosed by the cerebral hemispheres.
Epithalamus
Forms the root of the third ventricle
Brain stem
About the size of a thumb in diameter and approximately 3 inches long
Meninges
Three connective tissue membranes covering and protecting the CNS structure
Cerebrospinal fluid
Watery broth similar in its makeup to blood plasma
Concussion
When brain injury is slight
Contision
Result of marked tissue destruction
Cerebral edema
Swelling of the brain due to inflammatory response to injury
Myosin
Principal contractile proteins found in muscles
CVA
Strokes , occur when blood circulation to a brain area is blocked
Synaptic cleft
The fluid - filled space at a synapse between neurons
Axon
Neuron process that carries impulses away from the nerve cell body;
Neuromuscular junction
The region were a motor neuron comes into close contact with a skeletal muscle cell
Acetylcholine
A chemical transmitter substance released by certain nerve endings
Sarcolemma
Oval nuclei beneath the plasma membrane
Action potential
Electrical event occurring when a stimulus of sufficient intensity is applied to a neuron or muscle cell
Muscle teotches
A single rapid contraction of a muscle followed by relaxation
Complete tetanus
The muscle is stimulated so rapidly that no evidence of relaxation is seen and the contractions are completely smooth and sustained
Creatine phosphate
Found in muscle fibers but not other cell types
Lactic acid
The product of anaerobic metabolism , especially in muscle
Isometric exercise
Of the same length .
Flexion
Bending; the movement that decreases the angle between bones
Extension
Movement that increases the angle of a joint , straightening a flexed knee
Rotation
Movement of a bone around its longitudinal axis
Circumduction
A combination of Flexion , extension , abduction , and adduction .
Myofibrils
Long ribbonlike organelles
Orogin
Attachment of a muscle that remains relatively fixed during muscular contraction
Insertion
The movable attachment of a muscle as opposed to its origin
Platysma
A single sheet like muscle that covers the anterolateral neck
Zygomaticus
Raises corner of mouth
Intercostal
Deep muscles between found between the ribs
Latissimus dorsi
Two large flat muscles that cover the lower back
Gluteus maximus
Superficial muscle of the hip that forms most of the flesh of the buttock
CNS
Consists of the brain and spinal cord
PNS
Consists mainly of the nerves that extend from the brain to the spinal cord
Afferent
Consists of nerves that convey impulses to the CNS from the sensory receptors.
Sarcomere
Chains of tiny contractile units
Efferent
Carries impulses from the CNS to effector organs, the muscles , and glands
Somatic
Allows us to consciously, or voluntarily, control our skeletal muscles
Autonomic
Regulates events that are autonomic or involuntary
Neitoglia
Cells that generally support, insulate, and protect the delicate neurons
Microglia
Spider like phagocytes that dispose of debris , including dead brain cells and bacteria
Oligodendrocytes
Glia that wrap their flat extensions tightly around the nerve fiber
Schwann Cells
Form the myelin sheaths around nerve fibers that are found in the PNS
Nissl substance
Intermediate filaments that are important in maintaining cell shape
Dendrites
Neuron processes that convey incoming messages
Myelin
Long nerve fibers are covered with a whitish fatty material
Myofilaments
Filaments composing the myofibrils. Two types : actin & myosin
Nodes of ranvier
Gaps or indentations
White matter
Dense collections of myelinated fibers
Grey matter
Contains mostly unmyelinated fibers and cell bodies
Association neurons
Connect the motor and sensory neurons in neural pathways
Bipolar
An axon and a dendrite
Unipolar
Single process emerging from the cell body
Reflexes
Rapid predictable and involuntary responses to stimuli
Sulci
Shallow grooves
Fissures
Less numerous are the deeper grooves
Occipital lobe
Visual area
Actin
Contractile protein
Primary motor area
Consciously move skeletal muscles
Broca's area
Found at the base of the precentral gyrus
Diencephalon
Sits atop the brain stem and is enclosed by the cerebral hemispheres.
Epithalamus
Forms the root of the third ventricle
Brain stem
About the size of a thumb in diameter and approximately 3 inches long
Meninges
Three connective tissue membranes covering and protecting the CNS structure
Cerebrospinal fluid
Watery broth similar in its makeup to blood plasma
Concussion
When brain injury is slight
Contision
Result of marked tissue destruction
Cerebral edema
Swelling of the brain due to inflammatory response to injury
Myosin
Principal contractile proteins found in muscles
CVA
Strokes , occur when blood circulation to a brain area is blocked
Blood brain barrier
A mechanism that inhibits passage of materials from the blood into brain tissues
Synaptic cleft
The fluid - filled space at a synapse between neurons
Axon
Neuron process that carries impulses away from the nerve cell body;
Neuromuscular junction
The region were a motor neuron comes into close contact with a skeletal muscle cell
Acetylcholine
A chemical transmitter substance released by certain nerve endings
Sarcolemma
Oval nuclei beneath the plasma membrane
Action potential
Electrical event occurring when a stimulus of sufficient intensity is applied to a neuron or muscle cell
Muscle teotches
A single rapid contraction of a muscle followed by relaxation
Complete tetanus
The muscle is stimulated so rapidly that no evidence of relaxation is seen and the contractions are completely smooth and sustained
Creatine phosphate
Found in muscle fibers but not other cell types
Lactic acid
The product of anaerobic metabolism , especially in muscle
Isometric exercise
Of the same length .
Flexion
Bending; the movement that decreases the angle between bones
Extension
Movement that increases the angle of a joint , straightening a flexed knee
Rotation
Movement of a bone around its longitudinal axis
Circumduction
A combination of Flexion , extension , abduction , and adduction .
Myofibrils
Long ribbonlike organelles
Orogin
Attachment of a muscle that remains relatively fixed during muscular contraction
Insertion
The movable attachment of a muscle as opposed to its origin
Platysma
A single sheet like muscle that covers the anterolateral neck
Zygomaticus
Raises corner of mouth
Intercostal
Deep muscles between found between the ribs
Latissimus dorsi
Two large flat muscles that cover the lower back
Gluteus maximus
Superficial muscle of the hip that forms most of the flesh of the buttock
CNS
Consists of the brain and spinal cord
PNS
Consists mainly of the nerves that extend from the brain to the spinal cord
Afferent
Consists of nerves that convey impulses to the CNS from the sensory receptors.
Sarcomere
Chains of tiny contractile units
Efferent
Carries impulses from the CNS to effector organs, the muscles , and glands
Somatic
Allows us to consciously, or voluntarily, control our skeletal muscles
Autonomic
Regulates events that are autonomic or involuntary
Neitoglia
Cells that generally support, insulate, and protect the delicate neurons
Microglia
Spider like phagocytes that dispose of debris , including dead brain cells and bacteria
Oligodendrocytes
Glia that wrap their flat extensions tightly around the nerve fiber
Schwann Cells
Form the myelin sheaths around nerve fibers that are found in the PNS
Nissl substance
Intermediate filaments that are important in maintaining cell shape
Dendrites
Neuron processes that convey incoming messages
Myelin
Long nerve fibers are covered with a whitish fatty material
Myofilaments
Filaments composing the myofibrils. Two types : actin & myosin
Nodes of ranvier
Gaps or indentations
White matter
Dense collections of myelinated fibers
Grey matter
Contains mostly unmyelinated fibers and cell bodies
Association neurons
Connect the motor and sensory neurons in neural pathways
Bipolar
An axon and a dendrite
Unipolar
Single process emerging from the cell body
Reflexes
Rapid predictable and involuntary responses to stimuli
Sulci
Shallow grooves
Fissures
Less numerous are the deeper grooves
Occipital lobe
Visual area
Actin
Contractile protein
Primary motor area
Consciously move skeletal muscles
Broca's area
Found at the base of the precentral gyrus
Diencephalon
Sits atop the brain stem and is enclosed by the cerebral hemispheres.
Epithalamus
Forms the root of the third ventricle
Brain stem
About the size of a thumb in diameter and approximately 3 inches long
Meninges
Three connective tissue membranes covering and protecting the CNS structure
Cerebrospinal fluid
Watery broth similar in its makeup to blood plasma
Concussion
When brain injury is slight
Contision
Result of marked tissue destruction
Cerebral edema
Swelling of the brain due to inflammatory response to injury
Myosin
Principal contractile proteins found in muscles
CVA
Strokes , occur when blood circulation to a brain area is blocked
Blood brain barrier
A mechanism that inhibits passage of materials from the blood into brain tissues
Cauda equina
Collection of spinal nerves at the inferior end of the vertebral canal
Synaptic cleft
The fluid - filled space at a synapse between neurons
Axon
Neuron process that carries impulses away from the nerve cell body;
Neuromuscular junction
The region were a motor neuron comes into close contact with a skeletal muscle cell
Acetylcholine
A chemical transmitter substance released by certain nerve endings
Sarcolemma
Oval nuclei beneath the plasma membrane
Action potential
Electrical event occurring when a stimulus of sufficient intensity is applied to a neuron or muscle cell
Muscle teotches
A single rapid contraction of a muscle followed by relaxation
Complete tetanus
The muscle is stimulated so rapidly that no evidence of relaxation is seen and the contractions are completely smooth and sustained
Creatine phosphate
Found in muscle fibers but not other cell types
Lactic acid
The product of anaerobic metabolism , especially in muscle
Isometric exercise
Of the same length .
Flexion
Bending; the movement that decreases the angle between bones
Extension
Movement that increases the angle of a joint , straightening a flexed knee
Rotation
Movement of a bone around its longitudinal axis
Circumduction
A combination of Flexion , extension , abduction , and adduction .
Myofibrils
Long ribbonlike organelles
Orogin
Attachment of a muscle that remains relatively fixed during muscular contraction
Insertion
The movable attachment of a muscle as opposed to its origin
Platysma
A single sheet like muscle that covers the anterolateral neck
Zygomaticus
Raises corner of mouth
Intercostal
Deep muscles between found between the ribs
Latissimus dorsi
Two large flat muscles that cover the lower back
Gluteus maximus
Superficial muscle of the hip that forms most of the flesh of the buttock
CNS
Consists of the brain and spinal cord
PNS
Consists mainly of the nerves that extend from the brain to the spinal cord
Afferent
Consists of nerves that convey impulses to the CNS from the sensory receptors.
Sarcomere
Chains of tiny contractile units
Efferent
Carries impulses from the CNS to effector organs, the muscles , and glands
Somatic
Allows us to consciously, or voluntarily, control our skeletal muscles
Autonomic
Regulates events that are autonomic or involuntary
Neitoglia
Cells that generally support, insulate, and protect the delicate neurons
Microglia
Spider like phagocytes that dispose of debris , including dead brain cells and bacteria
Oligodendrocytes
Glia that wrap their flat extensions tightly around the nerve fiber
Schwann Cells
Form the myelin sheaths around nerve fibers that are found in the PNS
Nissl substance
Intermediate filaments that are important in maintaining cell shape
Dendrites
Neuron processes that convey incoming messages
Myelin
Long nerve fibers are covered with a whitish fatty material
Myofilaments
Filaments composing the myofibrils. Two types : actin & myosin
Nodes of ranvier
Gaps or indentations
White matter
Dense collections of myelinated fibers
Grey matter
Contains mostly unmyelinated fibers and cell bodies
Association neurons
Connect the motor and sensory neurons in neural pathways
Bipolar
An axon and a dendrite
Unipolar
Single process emerging from the cell body
Reflexes
Rapid predictable and involuntary responses to stimuli
Sulci
Shallow grooves
Fissures
Less numerous are the deeper grooves
Occipital lobe
Visual area
Actin
Contractile protein
Primary motor area
Consciously move skeletal muscles
Broca's area
Found at the base of the precentral gyrus
Diencephalon
Sits atop the brain stem and is enclosed by the cerebral hemispheres.
Epithalamus
Forms the root of the third ventricle
Brain stem
About the size of a thumb in diameter and approximately 3 inches long
Meninges
Three connective tissue membranes covering and protecting the CNS structure
Cerebrospinal fluid
Watery broth similar in its makeup to blood plasma
Concussion
When brain injury is slight
Contision
Result of marked tissue destruction
Cerebral edema
Swelling of the brain due to inflammatory response to injury
Myosin
Principal contractile proteins found in muscles
CVA
Strokes , occur when blood circulation to a brain area is blocked
Blood brain barrier
A mechanism that inhibits passage of materials from the blood into brain tissues
Cauda equina
Collection of spinal nerves at the inferior end of the vertebral canal
Endoneurium
Delicate connective tissue sheath
Synaptic cleft
The fluid - filled space at a synapse between neurons
Axon
Neuron process that carries impulses away from the nerve cell body;
Neuromuscular junction
The region were a motor neuron comes into close contact with a skeletal muscle cell
Acetylcholine
A chemical transmitter substance released by certain nerve endings
Sarcolemma
Oval nuclei beneath the plasma membrane
Action potential
Electrical event occurring when a stimulus of sufficient intensity is applied to a neuron or muscle cell
Muscle teotches
A single rapid contraction of a muscle followed by relaxation
Complete tetanus
The muscle is stimulated so rapidly that no evidence of relaxation is seen and the contractions are completely smooth and sustained
Creatine phosphate
Found in muscle fibers but not other cell types
Lactic acid
The product of anaerobic metabolism , especially in muscle
Isometric exercise
Of the same length .
Flexion
Bending; the movement that decreases the angle between bones
Extension
Movement that increases the angle of a joint , straightening a flexed knee
Rotation
Movement of a bone around its longitudinal axis
Circumduction
A combination of Flexion , extension , abduction , and adduction .
Myofibrils
Long ribbonlike organelles
Orogin
Attachment of a muscle that remains relatively fixed during muscular contraction
Insertion
The movable attachment of a muscle as opposed to its origin
Platysma
A single sheet like muscle that covers the anterolateral neck
Zygomaticus
Raises corner of mouth
Intercostal
Deep muscles between found between the ribs
Latissimus dorsi
Two large flat muscles that cover the lower back
Gluteus maximus
Superficial muscle of the hip that forms most of the flesh of the buttock
CNS
Consists of the brain and spinal cord
PNS
Consists mainly of the nerves that extend from the brain to the spinal cord
Afferent
Consists of nerves that convey impulses to the CNS from the sensory receptors.
Sarcomere
Chains of tiny contractile units
Efferent
Carries impulses from the CNS to effector organs, the muscles , and glands
Somatic
Allows us to consciously, or voluntarily, control our skeletal muscles
Autonomic
Regulates events that are autonomic or involuntary
Neitoglia
Cells that generally support, insulate, and protect the delicate neurons
Microglia
Spider like phagocytes that dispose of debris , including dead brain cells and bacteria
Oligodendrocytes
Glia that wrap their flat extensions tightly around the nerve fiber
Schwann Cells
Form the myelin sheaths around nerve fibers that are found in the PNS
Nissl substance
Intermediate filaments that are important in maintaining cell shape
Dendrites
Neuron processes that convey incoming messages
Myelin
Long nerve fibers are covered with a whitish fatty material
Myofilaments
Filaments composing the myofibrils. Two types : actin & myosin
Nodes of ranvier
Gaps or indentations
White matter
Dense collections of myelinated fibers
Grey matter
Contains mostly unmyelinated fibers and cell bodies
Association neurons
Connect the motor and sensory neurons in neural pathways
Bipolar
An axon and a dendrite
Unipolar
Single process emerging from the cell body
Reflexes
Rapid predictable and involuntary responses to stimuli
Sulci
Shallow grooves
Fissures
Less numerous are the deeper grooves
Occipital lobe
Visual area
Actin
Contractile protein
Primary motor area
Consciously move skeletal muscles
Broca's area
Found at the base of the precentral gyrus
Diencephalon
Sits atop the brain stem and is enclosed by the cerebral hemispheres.
Epithalamus
Forms the root of the third ventricle
Brain stem
About the size of a thumb in diameter and approximately 3 inches long
Meninges
Three connective tissue membranes covering and protecting the CNS structure
Cerebrospinal fluid
Watery broth similar in its makeup to blood plasma
Concussion
When brain injury is slight
Contision
Result of marked tissue destruction
Cerebral edema
Swelling of the brain due to inflammatory response to injury
Myosin
Principal contractile proteins found in muscles
CVA
Strokes , occur when blood circulation to a brain area is blocked
Blood brain barrier
A mechanism that inhibits passage of materials from the blood into brain tissues
Cauda equina
Collection of spinal nerves at the inferior end of the vertebral canal
Endoneurium
Delicate connective tissue sheath
Sympathetic
Mobilizes the body during extreme situations
Synaptic cleft
The fluid - filled space at a synapse between neurons
Axon
Neuron process that carries impulses away from the nerve cell body;
Neuromuscular junction
The region were a motor neuron comes into close contact with a skeletal muscle cell
Acetylcholine
A chemical transmitter substance released by certain nerve endings
Sarcolemma
Oval nuclei beneath the plasma membrane
Action potential
Electrical event occurring when a stimulus of sufficient intensity is applied to a neuron or muscle cell
Muscle teotches
A single rapid contraction of a muscle followed by relaxation
Complete tetanus
The muscle is stimulated so rapidly that no evidence of relaxation is seen and the contractions are completely smooth and sustained
Creatine phosphate
Found in muscle fibers but not other cell types
Lactic acid
The product of anaerobic metabolism , especially in muscle
Isometric exercise
Of the same length .
Flexion
Bending; the movement that decreases the angle between bones
Extension
Movement that increases the angle of a joint , straightening a flexed knee
Rotation
Movement of a bone around its longitudinal axis
Circumduction
A combination of Flexion , extension , abduction , and adduction .
Myofibrils
Long ribbonlike organelles
Orogin
Attachment of a muscle that remains relatively fixed during muscular contraction
Insertion
The movable attachment of a muscle as opposed to its origin
Platysma
A single sheet like muscle that covers the anterolateral neck
Zygomaticus
Raises corner of mouth
Intercostal
Deep muscles between found between the ribs
Latissimus dorsi
Two large flat muscles that cover the lower back
Gluteus maximus
Superficial muscle of the hip that forms most of the flesh of the buttock
CNS
Consists of the brain and spinal cord
PNS
Consists mainly of the nerves that extend from the brain to the spinal cord
Afferent
Consists of nerves that convey impulses to the CNS from the sensory receptors.
Sarcomere
Chains of tiny contractile units
Efferent
Carries impulses from the CNS to effector organs, the muscles , and glands
Somatic
Allows us to consciously, or voluntarily, control our skeletal muscles
Autonomic
Regulates events that are autonomic or involuntary
Neitoglia
Cells that generally support, insulate, and protect the delicate neurons
Microglia
Spider like phagocytes that dispose of debris , including dead brain cells and bacteria
Oligodendrocytes
Glia that wrap their flat extensions tightly around the nerve fiber
Schwann Cells
Form the myelin sheaths around nerve fibers that are found in the PNS
Nissl substance
Intermediate filaments that are important in maintaining cell shape
Dendrites
Neuron processes that convey incoming messages
Myelin
Long nerve fibers are covered with a whitish fatty material
Myofilaments
Filaments composing the myofibrils. Two types : actin & myosin
Nodes of ranvier
Gaps or indentations
White matter
Dense collections of myelinated fibers
Grey matter
Contains mostly unmyelinated fibers and cell bodies
Association neurons
Connect the motor and sensory neurons in neural pathways
Bipolar
An axon and a dendrite
Unipolar
Single process emerging from the cell body
Reflexes
Rapid predictable and involuntary responses to stimuli
Sulci
Shallow grooves
Fissures
Less numerous are the deeper grooves
Occipital lobe
Visual area
Actin
Contractile protein
Primary motor area
Consciously move skeletal muscles
Broca's area
Found at the base of the precentral gyrus
Diencephalon
Sits atop the brain stem and is enclosed by the cerebral hemispheres.
Epithalamus
Forms the root of the third ventricle
Brain stem
About the size of a thumb in diameter and approximately 3 inches long
Meninges
Three connective tissue membranes covering and protecting the CNS structure
Cerebrospinal fluid
Watery broth similar in its makeup to blood plasma
Concussion
When brain injury is slight
Contision
Result of marked tissue destruction
Cerebral edema
Swelling of the brain due to inflammatory response to injury
Myosin
Principal contractile proteins found in muscles
CVA
Strokes , occur when blood circulation to a brain area is blocked
Blood brain barrier
A mechanism that inhibits passage of materials from the blood into brain tissues
Cauda equina
Collection of spinal nerves at the inferior end of the vertebral canal
Endoneurium
Delicate connective tissue sheath
Sympathetic
Mobilizes the body during extreme situations
Parasympathetic
Allows us to unwind & conserve energy
Synaptic cleft
The fluid - filled space at a synapse between neurons
Axon
Neuron process that carries impulses away from the nerve cell body;
Neuromuscular junction
The region were a motor neuron comes into close contact with a skeletal muscle cell
Acetylcholine
A chemical transmitter substance released by certain nerve endings