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| Skeletal System Function (5) |
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Definition
| *support *protection *movement *mineral storage *blood cell production |
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| *long *short *flat *irregular bones |
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| square/cube shape (carpal/metacarpal) |
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| irregular bones (example) |
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| medullary cavity (structure) |
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Definition
| filled with yellow marrow (adipose) |
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| articular cartilage (structure) |
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Definition
| *on each end on epiphysis |
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| thin membrane which lines medullary cavity |
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*sometimes lined with red bone marrow
*each end of long bone (epiphyseal) |
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| *osteoblast *osteocytes *osteoclast |
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| *mature bone cells *an osteoblast no longer producing bone. |
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| *bone dissolving cells *bone resorption=dissolving bone |
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| Chemical composition of Bone |
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Definition
*organic component (20%)
*inorganic component (80%) makes bone hard |
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| (chemical) organic component is made of |
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Definition
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| (chemical) inorganic component is made of |
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Definition
hydroxyapatite-complex misture of calcium and phosphate
*(80%) *makes bone hard
*CA++ & PO4 |
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Term
| Bone Development (embryonic) ossification |
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Definition
*intramembranous ossification (dvlpmnt)
*endochondral ossification |
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Term
| intramembranous ossification (development) |
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Definition
*cranial bones *clavical
**bone develops from a DENSE REGULAR CONNECTIVE TISSU |
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| endochondral ossification (development) |
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Definition
*majority of bones
**bone develops from HYALIN CARTILAGE |
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Mechanisms of bone growth
*long bone growth (2) types |
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Definition
I. Length growth
II. Width growth |
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Mechanisms of bone growth
*describe long bone growth type I length |
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Definition
| I. Length growth-epiphyseal plate (hyalin cartilage) important for growth pg 204 txt |
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Mechanisms of bone growth
*describe long bone growth type II width |
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Definition
| II. Width growth (diameter)-as osteoclasts (dissolve) happen, osteoblasts form (produce) |
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