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24 Cards in this Set
- Front
- Back
Composition of Osseous Tissue?
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Blood, Cartilage, Adapose, Nervous
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2 primary tissues of osseous tissue
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CT and nervous
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organic components of bone tissue
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cells and colagen
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inorganic components of bone tissue
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hydroxyapatites
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hydroxyapatites =
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mineral salt, primarily calcium phosphate
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99% of Ca is in the form of?
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hydroxyapatites
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functions of bone tissue
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support, protection, movement, mineral storage and hemopoiesis
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hemopoiesis?
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blood cell formation
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classification of bones by shape
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long bones, short bones, flat bones, irregular bones
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Sesamold bone?
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bone that forms w/in a tendon (ex. patella)
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osteon?
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compact bone, functional unit, each osteon is a tiny weight bearing pillar, parallel to each other
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spongy bone
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found in epiphysis, absorbs stress
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flat bones have?
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a diploe structure (sandwich) - compact bone
spongy bone compact bone |
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red marrow found in?
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epiphysis and medullary cavity
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most amt of red marrow producded in?
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hips and humerus epiphysis
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Where is yellow marrow found?
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Medullary cavity
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Osteogenic cells
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"stem cells", make osteoblast and osteoclast, hold all the genitic info to make all cells in the body
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Osteoblasts
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build matrix, increases matrix formation during exercise or other physical stress, amitotic
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osteoclasts
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breakdown matrix to release Ca and remodel matrix under stress conditions, secrete an acid, amitotic
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osteocytes
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walled in osteoblasts that become embedded in lacunae, senses cracks/pressure stress points for repair, amitotic
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ossification
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formation of bone from cartilage/membrane
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2 tyes of ossification
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intramembraneous - replaces fibrous membrane in flat bones of skull/ribs
endochondral- hyaline cartilage becomes a model for rest of skeleton |
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2 trypes of bone growth
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interstitial growth - longitudinal growth
appositional growth- width |
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interstitial growth
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hormonally controlled, epiphyseal plate seals
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