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Cards In This Set
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What are the five functions of bone?
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Protection of vital organs
support storage of minerals and nutrients leverage production of blood cells |
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What are the four types of bones and their examples?
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Long Bone: Humerus/Femur
Short Bone: Tarsal/Carpal Flat Bone: Ribs/Scapulae Irregular Bone: Vertebrae/ Pelvis |
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What are the three types of bone cells and function?
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Osteocytes: mature cells
osteoclasts: release acid and enzymes to break down bone indirectly responsible for release of calcium and stored minerals and nutrients. Osteoblasts: responsible for growth of bone cells |
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Ossification
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Replacing other tissues with bones
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Hsahasdhd
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Intramembraneous ossification begins when
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Begins when osteoblasts differentiate within embryonic or fetal fibrous connective tissue
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Intramembraneous ossification can be found in where
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Deeper layers of the dermis
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Steps of endochondrial ossification
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Chondrocytes at the center of the growing cartilage model enlarge and then die as matrix calcifies
newly derived osteoblasts cover the shaft of the cartilage in a thin layer of bone blood vessels penetrate the cartilage new osteoblasts form a primary ossification center the bone of the shaft thickens, and the cartilage newar each epiphysis is replaced by shafts of bone blod vessels invade the epiphyses and osteoblasts form secondary centers of ossification. |
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The four steps in injury repair
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Fracture hematoma(large blood clot)
localized thickining (internal or external callus) oseteoblasts repace the new central cartilage of the external callys with spongey bone |
