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134 Cards in this Set
- Front
- Back
Osteology is the
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The study of bone
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Chrondro means
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Cartilage
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Cartilage consist of cells known as_______
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Chondrocytes
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Cartilage is surrounded by a layer covering of dense irregular connective tissue know as________
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Perichondrium
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Cartilages of the skeleton (8):
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Articular
Costal Laryngeal Tracheal and bronchial Nasal Intervertebral disk Ligaments Tendons |
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This cartilage cover the bone ends
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Articular cartilage
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This cartilage connecting the ribs to the sternum
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Costal cartilages
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This cartilage support the nose
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Nasal cartilage
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This cartilage attach muscle to bone
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Tendons
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This cartilage construct the larynx
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Laryngeal cartilage
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This cartilage hold bones together at the joints
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Ligaments
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This cartilage separate cushion bones of the spine
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Intervertebral disk
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This cartilage reinforce other passage ways of the respiratory system
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Tracheal and bronchial cartilages
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Axial skeleton consist of_______(6)
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Skull
Vertebrae Sternum Ribs Sacrum Hyoid |
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Appendicular skeleton consist of________(4)
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Pectoral gridle
Upper extremity Pelvic gridle Lower extremity |
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Osseous tissue is
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Bone
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Connective tissue that has a hard matrix because of deposition of calcium phosphate and other minerals
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Osseous tissue
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Name of the hardening process of bone
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Mineralization or Calcification
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Classification of bones
Four groups: |
Long bones
Short bones Flat bones Irregular bones |
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What bones are long and slender?
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Long bones
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Location of the long bones
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Arm, forearm, thigh, leg, metacarpal, phalanges of the hand, metatarsals, phalanges of the feet.
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Example of the long bone is
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Femur, humerus, radius, ulna, etc
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What group of bones provide structural support and movement?
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Long bones
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What bones are small and boxy?
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Short bones
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Ex of the short bones:
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Carpal, tarsal
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Function of the short bones:
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Makes ankle and wrist bend in multiple direction or glide across one another and multiple directions.
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That group of bones Makes ankle and wrist bend in multiple direction or glide across one another and multiple directions?
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Short bones
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What group of bones has a thin roughly parallel surfaces or sandviched like structure
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Flat bones
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What bones form the roof of the skull, the sternum, pelvic bones, the ribs and scapulae?
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Flat bones
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What group of bones protect soft tissue of the brain and organs in the thorax?
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Flat bones
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Example of Flat bones:
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Shoulder blade, ribs, sternum
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What group of bones has complicated shapes?
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Irregular bones
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Ex of the irregular bones:
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Vertebrae, coxal bone
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What type of short bones formed in tendons?
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Sesamoid bones
Ex: patellas (kneecaps) |
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What type of bones is tiny and soft , and found in sutures between cranial bones?
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Wormain or sutural bones
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The external layer of a bone known as ______
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Compact bone
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Bone textures*
What type of bone is dense, smooth, and solid? |
Compact bone
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Bone textures*
What type of bone has trabeculae and red or yellow bone marrow? |
Spongy bone
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What is a trabeculae?
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Honeycomb of small needle like or flat pieces.
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Two types of bone textures:
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Spongy bone and compact bone
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Diaphysis is the_______
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Central part of a long bone
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_________ Is the central part of a long bone forming the long axis of the bone
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Diaphysis
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_______ is the space in the diaphysis that contains bone marrow.
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Marrow cavity
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Marrow cavity also known as _____________
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Medullary cavity
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Extremities or ends of a long bone also called ________
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Epithyses
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______ minute holes in the bone surface that allows blood vessels to penetrate
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Nutrient foramina
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What is Nutrient foramina?
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It is a minute holes in the bone surface that allows blood vessels to penetrate
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Periosteum is a
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White, double layered membrane that covers external surfaces of bone.
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______ is a white, double layered membrane that covers external surfaces of bone.
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Periosteum
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Endosteum is a
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Thin layer of reticular connective tissue covering the internal bone surface
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What is Epiphyseal plate (growth plate)?
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Area of hyaline cartilage that separates marrow spaces of the epiphysis and diaphysis
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Epiphyseal line is a
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In adults, a bony scar that Marc's where growth plate used to be
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Structure of a long bone:
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Diaphysis
Epiphysis Marrow cavity Spongy bone Articular cartilage Nutrient foramina Periosteum Endosteum Epiphyseal plate Epipheseal line |
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______ general term for soft tissue that occupies the marrow cavity of a long bone and small spaces amid trabeculae of spongy bone
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Bone marrow
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2 types of bone marrow :
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Yellow and red marrow
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What type of marrow is found within trabecular cavities of spongy bone and diploe of flat bones?
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Red marrow
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_____ marrow found in adults.
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Red marrow
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Most ____ marrow turns into _______ fatty marrow.
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Red, yellow
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In _____ bones, the spongy bone called the diploe
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Flat bones
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What is diploe?
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The name for spongy bone in flat bones
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What bones are share a simple design ?
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Short, irregular and flat bones.
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_____ bone has a sandwich like construction with two layers of compact bone enclosing a middle layer of spongy bone
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Flat bone
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Functions of bones:
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Support
Protection Movement Electrolyte balance Acid-base balance Blood formation |
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Bone is connective tissue that consists of____________
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Cells , fibers, and ground substance
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Four types of bone cells:
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Osteogenic
Osteoblasts Osteocytes Osteoclasts |
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Osteogenic cell is also known as a ______ cell
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Stem cell
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____ cells that develop from me embryonic mesenchymal cells and then give rise to most other bone cells
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Osteogenic or stem
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Where is location of osteogenic cells?
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Found in the endosteum and in the inner layer of periosteum
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Osteogenic cells multiply continuously and some become ____
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Osteoblasts
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Osteoblast is a
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Matrix-synthesizing cell responsible for bone gtowth
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Name the cell that is a matrix-synthesizing cell responsible for bone gtowth
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Osteoblast
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Which cell secrete osteocalcin?
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Osteoblast
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Osteocyte is a
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Mature bone cell that reside in little chamber known as lacunae. It also monitors and maintains bone matrix
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______ is a mature bone cell that reside in little chamber known as lacunae. It also monitors and maintains bone matrix
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Osteocyte
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Osteoclast is a
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Bone resorbing cell
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_______ is a bone dissolving cell found on the bone surface. They develop from the same bone marrow that gives rise to the blood cells.
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Osteoclast
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What is the function of osteoclasts?
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Break down bone and release minerals from bone fluid and transfer calcium to the blood
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Compact bone is also known as
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Lamellar bone
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Compact bone consist of _______
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Osteon (harversian system)
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Osteon is the
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Basic structural unit of compact bone.
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Each osteon ( haversian system ) consist of two things:
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Lamellae and Central (harversian) canal
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The harversian canal contains the __________
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Bone's nerve and blood supply
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Lacunae is a
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Little chamber and cavities where mature bone cells osteocytes reside.
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Canaliculi is the
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Hair like canal that connect lacunae to each other and to the central harvest an canal
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Lamellae is a
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Thin flat scale, membrane, or layer
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Interstitial lamellae are_______
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Incomplete lamellae that are not part of complete osteon
They fill gaps between forming osteons |
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______ are incomplete lamellae that are not part of complete osteon
They fill gaps between forming osteons |
Interstitial lamellae
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Circumferential lamellae
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Located deep to periosteum and superficial to endosteum Extend aroun entire surface of diaphysis
They resist twisting of long bone |
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________ is located deep to periosteum and superficial to endosteum Extend aroun entire surface of diaphysis
They resist twisting of long bone |
Circumferential lamellae
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Spongy bone is also known as__________
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Cancellous bones
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What type of bone is consist of small needlelike or flat pieces of bone known as trabeculae?
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Spongy bone
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What type of bone contain irregularly arranged lamellae and osteocytes are intercorred by canaliculi?
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Spongy bone
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What is Osteofication or Osteogenesis?
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the formation of bone
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#
_______ is the name for the formation of bone. |
Osteofication or Osteogenesis
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Name two methods of how bone develops in the human fetus and infant. |
1) intramembraneous ossification
2) endochondral occification |
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What is 1) intramembraneous ossification 2) endochondral occification ??? |
two methods of how bone develops in the human fetus and infant.
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_______ produce the flat bones of the skull and most of the clavicle |
intramembraneous ossification
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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. |
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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 |
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What is Endochondrial ossification??? |
it is the procces in which bone develops from pre-existing cartilage model.
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When is the Endochondrial ossification begins and ends? |
begining the 6th fetal week and ending in 20th
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#
the process of replace of cartilage by bone is known as ________ |
Endochondral ossification
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Appositional growth
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growth in diametr and thickness
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Interstitial growth
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growth in length
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The cause of Gigantism is_____
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Hypersecretion of hormones
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A deficit of growth hormone can cause _____
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dwarfism
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Achondroplastic dwarfism is when ______
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long bones of the limb stop growing in childhood while growth of other bones is uneffected
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pituitary dwarfism is when _____
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lack of growth hormone
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Name a cristalization process in which calcium phosphate, and other ions are taken from blood plasma and depositd in bone tissue.
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Mineral deposition
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Mineral deposition is a
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a cristalization process in which calcium phosphate, and other ions are taken from blood plasma and depositd in bone tissue.
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Mineral resorption is a
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the process of dissolving bone and releasing minerals into the blood
Osteoclasts |
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Calcium concentration in blood plasma is normaly ______
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9.2 to 10.4
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Calcium deficiency is known as ______
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hypocalcemia
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Carpopedal spasm cauced by ____
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Hypocalcemia
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Hypercalcemia is when____
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blood calcium is 12 or higher
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_____ causes depression, emotional disturbance, musscle weakness and cardiac arrest.
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Hypercalcemia
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Calcium homeostasis is gegulated by 3 hormones :
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Calcitriol
Calsitonin Parathyroid hormone |
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______ a form of vitamin D produced by sequential action of skin, liver and kidneys
It also raises blood calcium concentration |
Calcitriol
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______ (lowers blood calcium) is secreted by C cells of the tyroid gland when calcium concentration raises too high
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Calcitonin
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_____ is secreated by parathyroid glands. These glands release PTH when calcium is too low.
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Parothyroid hormone (PTH)
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_____ is a break caused by abnormal trauma to a bone
ex: |
stress fracture
falls, athletics, milirary combat |
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stress fracture is a
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is a break caused by abnormal trauma to a bone
ex: falls, athletics, milirary combat |
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Pathological fracture is a
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is a break in bone weakned by some other disease
Such as bone cancer or osteoporosis |
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____ is a break in bone weakned by some other disease
Such as bone cancer or osteoporosis |
Pathological fracture
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*Types of fractures:
Simple- |
bone braks cleanly,does not penetrate the skin
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*Types of fractures:
Compound- |
broken ends of bone protrude through the skin
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*Types of fractures:
comminuted |
bone fragments into many pieces
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*Types of fractures:
Compression |
bone is crushed
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*Types of fractures:
depressed |
broken bone portion is pressed inward
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*Types of fractures:
Impacted- |
Broken bone ends are forced into each other
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*Types of fractures:
Greenstick- |
Bone breaks incompletley similar to a green twig
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*Types of fractures:
Non displaced- |
the portions of bone are still in correct anatomical alignment
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How long does it take bone to fracture?
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uncomplicated fractures normally 8 - 12 weeks
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4 stages of healing bone fractures:
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1. Hematoma formation
2. Fibrocartilaginous callus formation 3. Bony callus formation 4. Remodeling |