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134 Cards in this Set

  • Front
  • Back
Osteology is the
The study of bone
Chrondro means
Cartilage
Cartilage consist of cells known as_______
Chondrocytes
Cartilage is surrounded by a layer covering of dense irregular connective tissue know as________
Perichondrium
Cartilages of the skeleton (8):
Articular
Costal
Laryngeal
Tracheal and bronchial
Nasal
Intervertebral disk
Ligaments
Tendons
This cartilage cover the bone ends
Articular cartilage
This cartilage connecting the ribs to the sternum
Costal cartilages
This cartilage support the nose
Nasal cartilage
This cartilage attach muscle to bone
Tendons
This cartilage construct the larynx
Laryngeal cartilage
This cartilage hold bones together at the joints
Ligaments
This cartilage separate cushion bones of the spine
Intervertebral disk
This cartilage reinforce other passage ways of the respiratory system
Tracheal and bronchial cartilages
Axial skeleton consist of_______(6)
Skull
Vertebrae
Sternum
Ribs
Sacrum
Hyoid
Appendicular skeleton consist of________(4)
Pectoral gridle
Upper extremity
Pelvic gridle
Lower extremity
Osseous tissue is
Bone
Connective tissue that has a hard matrix because of deposition of calcium phosphate and other minerals
Osseous tissue
Name of the hardening process of bone
Mineralization or Calcification
Classification of bones
Four groups:
Long bones
Short bones
Flat bones
Irregular bones
What bones are long and slender?
Long bones
Location of the long bones
Arm, forearm, thigh, leg, metacarpal, phalanges of the hand, metatarsals, phalanges of the feet.
Example of the long bone is
Femur, humerus, radius, ulna, etc
What group of bones provide structural support and movement?
Long bones
What bones are small and boxy?
Short bones
Ex of the short bones:
Carpal, tarsal
Function of the short bones:
Makes ankle and wrist bend in multiple direction or glide across one another and multiple directions.
That group of bones Makes ankle and wrist bend in multiple direction or glide across one another and multiple directions?
Short bones
What group of bones has a thin roughly parallel surfaces or sandviched like structure
Flat bones
What bones form the roof of the skull, the sternum, pelvic bones, the ribs and scapulae?
Flat bones
What group of bones protect soft tissue of the brain and organs in the thorax?
Flat bones
Example of Flat bones:
Shoulder blade, ribs, sternum
What group of bones has complicated shapes?
Irregular bones
Ex of the irregular bones:
Vertebrae, coxal bone
What type of short bones formed in tendons?
Sesamoid bones
Ex: patellas (kneecaps)
What type of bones is tiny and soft , and found in sutures between cranial bones?
Wormain or sutural bones
The external layer of a bone known as ______
Compact bone
Bone textures*
What type of bone is dense, smooth, and solid?
Compact bone
Bone textures*
What type of bone has trabeculae and red or yellow bone marrow?
Spongy bone
What is a trabeculae?
Honeycomb of small needle like or flat pieces.
Two types of bone textures:
Spongy bone and compact bone
Diaphysis is the_______
Central part of a long bone

_________ Is the central part of a long bone forming the long axis of the bone
Diaphysis
_______ is the space in the diaphysis that contains bone marrow.
Marrow cavity
Marrow cavity also known as _____________
Medullary cavity
Extremities or ends of a long bone also called ________
Epithyses
______ minute holes in the bone surface that allows blood vessels to penetrate
Nutrient foramina
What is Nutrient foramina?
It is a minute holes in the bone surface that allows blood vessels to penetrate
Periosteum is a
White, double layered membrane that covers external surfaces of bone.
______ is a white, double layered membrane that covers external surfaces of bone.
Periosteum
Endosteum is a
Thin layer of reticular connective tissue covering the internal bone surface
What is Epiphyseal plate (growth plate)?
Area of hyaline cartilage that separates marrow spaces of the epiphysis and diaphysis
Epiphyseal line is a
In adults, a bony scar that Marc's where growth plate used to be
Structure of a long bone:
Diaphysis
Epiphysis
Marrow cavity
Spongy bone
Articular cartilage
Nutrient foramina
Periosteum
Endosteum
Epiphyseal plate
Epipheseal line
______ general term for soft tissue that occupies the marrow cavity of a long bone and small spaces amid trabeculae of spongy bone
Bone marrow
2 types of bone marrow :
Yellow and red marrow
What type of marrow is found within trabecular cavities of spongy bone and diploe of flat bones?
Red marrow
_____ marrow found in adults.
Red marrow
Most ____ marrow turns into _______ fatty marrow.
Red, yellow
In _____ bones, the spongy bone called the diploe
Flat bones
What is diploe?
The name for spongy bone in flat bones
What bones are share a simple design ?
Short, irregular and flat bones.
_____ bone has a sandwich like construction with two layers of compact bone enclosing a middle layer of spongy bone
Flat bone
Functions of bones:
Support
Protection
Movement
Electrolyte balance
Acid-base balance
Blood formation
Bone is connective tissue that consists of____________
Cells , fibers, and ground substance
Four types of bone cells:
Osteogenic
Osteoblasts
Osteocytes
Osteoclasts
Osteogenic cell is also known as a ______ cell
Stem cell
____ cells that develop from me embryonic mesenchymal cells and then give rise to most other bone cells
Osteogenic or stem
Where is location of osteogenic cells?
Found in the endosteum and in the inner layer of periosteum
Osteogenic cells multiply continuously and some become ____
Osteoblasts
Osteoblast is a
Matrix-synthesizing cell responsible for bone gtowth
Name the cell that is a matrix-synthesizing cell responsible for bone gtowth
Osteoblast
Which cell secrete osteocalcin?
Osteoblast
Osteocyte is a
Mature bone cell that reside in little chamber known as lacunae. It also monitors and maintains bone matrix
______ is a mature bone cell that reside in little chamber known as lacunae. It also monitors and maintains bone matrix
Osteocyte
Osteoclast is a
Bone resorbing cell
_______ is a bone dissolving cell found on the bone surface. They develop from the same bone marrow that gives rise to the blood cells.
Osteoclast
What is the function of osteoclasts?
Break down bone and release minerals from bone fluid and transfer calcium to the blood
Compact bone is also known as
Lamellar bone
Compact bone consist of _______
Osteon (harversian system)
Osteon is the
Basic structural unit of compact bone.
Each osteon ( haversian system ) consist of two things:
Lamellae and Central (harversian) canal
The harversian canal contains the __________
Bone's nerve and blood supply
Lacunae is a
Little chamber and cavities where mature bone cells osteocytes reside.
Canaliculi is the
Hair like canal that connect lacunae to each other and to the central harvest an canal
Lamellae is a
Thin flat scale, membrane, or layer
Interstitial lamellae are_______
Incomplete lamellae that are not part of complete osteon
They fill gaps between forming osteons
______ are incomplete lamellae that are not part of complete osteon
They fill gaps between forming osteons
Interstitial lamellae
Circumferential lamellae
Located deep to periosteum and superficial to endosteum Extend aroun entire surface of diaphysis
They resist twisting of long bone
________ is located deep to periosteum and superficial to endosteum Extend aroun entire surface of diaphysis
They resist twisting of long bone
Circumferential lamellae
Spongy bone is also known as__________
Cancellous bones
What type of bone is consist of small needlelike or flat pieces of bone known as trabeculae?
Spongy bone
What type of bone contain irregularly arranged lamellae and osteocytes are intercorred by canaliculi?
Spongy bone
What is Osteofication or Osteogenesis?
the formation of bone
#
_______ is the name for the formation of bone.
Osteofication or Osteogenesis
#
Name two methods of how bone develops in the human fetus and infant.
1) intramembraneous ossification
2) endochondral occification
#
What is
1) intramembraneous ossification
2) endochondral occification
???
two methods of how bone develops in the human fetus and infant.
#
_______ produce the flat bones of the skull and most of the clavicle
intramembraneous ossification
#
Steps of the intramembanous ossification(4):
1)Occification centers appear in a fibrous connective tissue membrane
2) Osteoid is secreted within the fibrous membrane and clacifies
3) Woven bone nd periosteum form
4) lamellar bone replaces woven bone, just deep to the periosteum. red marrow appers.
#
Endochondral ossification 6 steps!!!!
1) messencyme cells develop into cartilage model , the shape of the future bone. then perichondriun produce chondrocytes and the cartilage model grow in thickness.
2)Perichondrium stop producing chondrocytes and begin producing osteoblast
-osteoblasts then debosit a compact bone
-perichondrium bocomes periosteum
3) blood vesslels penetrate the bony collar and invade the primary occification center
As the center of model is filled out with blood and stems cell it becomes aprimary marrow cavity
-chondocyte enlargement and death occure in the epiphysis of the model creating a secondary ossification center
4)secondary ossification center becomes hollowed out, and generate secondary marrow cavity in the epiphysis
5)cartilage then limited to the articular cartilage covering and epiphyseal plate
6) primary amd secondary marrow cavity unite into a single cavity
#
What is Endochondrial ossification???
it is the procces in which bone develops from pre-existing cartilage model.
#
When is the Endochondrial ossification begins and ends?
begining the 6th fetal week and ending in 20th
#
the process of replace of cartilage by bone is known as ________
Endochondral ossification
Appositional growth
growth in diametr and thickness
Interstitial growth
growth in length
The cause of Gigantism is_____
Hypersecretion of hormones
A deficit of growth hormone can cause _____
dwarfism
Achondroplastic dwarfism is when ______
long bones of the limb stop growing in childhood while growth of other bones is uneffected
pituitary dwarfism is when _____
lack of growth hormone
Name a cristalization process in which calcium phosphate, and other ions are taken from blood plasma and depositd in bone tissue.
Mineral deposition
Mineral deposition is a
a cristalization process in which calcium phosphate, and other ions are taken from blood plasma and depositd in bone tissue.
Mineral resorption is a
the process of dissolving bone and releasing minerals into the blood
Osteoclasts
Calcium concentration in blood plasma is normaly ______
9.2 to 10.4
Calcium deficiency is known as ______
hypocalcemia
Carpopedal spasm cauced by ____
Hypocalcemia
Hypercalcemia is when____
blood calcium is 12 or higher
_____ causes depression, emotional disturbance, musscle weakness and cardiac arrest.
Hypercalcemia
Calcium homeostasis is gegulated by 3 hormones :
Calcitriol
Calsitonin
Parathyroid hormone
______ a form of vitamin D produced by sequential action of skin, liver and kidneys
It also raises blood calcium concentration
Calcitriol
______ (lowers blood calcium) is secreted by C cells of the tyroid gland when calcium concentration raises too high
Calcitonin
_____ is secreated by parathyroid glands. These glands release PTH when calcium is too low.
Parothyroid hormone (PTH)
_____ is a break caused by abnormal trauma to a bone
ex:
stress fracture
falls, athletics, milirary combat
stress fracture is a
is a break caused by abnormal trauma to a bone
ex: falls, athletics, milirary combat
Pathological fracture is a
is a break in bone weakned by some other disease
Such as bone cancer or osteoporosis
____ is a break in bone weakned by some other disease
Such as bone cancer or osteoporosis
Pathological fracture
*Types of fractures:
Simple-
bone braks cleanly,does not penetrate the skin
*Types of fractures:
Compound-
broken ends of bone protrude through the skin
*Types of fractures:
comminuted
bone fragments into many pieces
*Types of fractures:
Compression
bone is crushed
*Types of fractures:
depressed
broken bone portion is pressed inward
*Types of fractures:
Impacted-
Broken bone ends are forced into each other
*Types of fractures:
Greenstick-
Bone breaks incompletley similar to a green twig
*Types of fractures:
Non displaced-
the portions of bone are still in correct anatomical alignment
How long does it take bone to fracture?
uncomplicated fractures normally 8 - 12 weeks
4 stages of healing bone fractures:
1. Hematoma formation
2. Fibrocartilaginous callus formation
3. Bony callus formation
4. Remodeling