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How many bones are in the adult skeletal system? |
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Thin roughly parallel surfaces; cranial bones, sternum |
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Irregular bones formed between cranial bones |
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Relatively long and slender |
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A narrow zone that connects the epiphysis to the shaft of the bone |
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Closed or simple fractures |
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Fractures are completely internal |
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Open or compound fractures |
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Fractures project through the skin |
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Occurs at the ankle and affects both bones of the leg |
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Overproduction of growth hormones before puberty |
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Results from abnormal epiphyseal activity; the individual will develop short, stocky limbs. |
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Very tall and have slender limbs due to excessive cartilage formation at the epiphyseal cartilages. |
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An expanded area found at each end of the bone |
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A space within the hollow shaft which is filled with bone marrow |
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Mature bone cells that cannot divide; Most numerous bone cell type. |
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Produce new bony matrix - osteogenesis or ossification |
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Remove and remodel bone matrix; giant cells with 50+ nuclei |
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Outer and inner surfaces of compact bone layer |
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Fill spaces between osteons |
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Located where bones are not heavily stressed or inmany directions; reduces weight of skeleton |
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The basic unit of compact bone, consisting of osteocytes |
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Fibrodysplasia ossificans progressiva (FOP) |
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Gene mutation that causes bone deposition around skeletal muscles |
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Growth hormone levels rise after epiphyseal plates close; bones get thicker especially in face, jaw and hands |
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