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25 Cards in this Set
- Front
- Back
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osteogenesis definition
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process of bone formation
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osteogenesis is used for formation of ____ skeleton in ____
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bony - embryos
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osteogenesis is used for bone growth during _______ and early ________
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childhood - adulthood
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osteogenesis is used for ____ ____ and repair in adults
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bone remodeling
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2 types of bone formation
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intramembranous ossification - endochondral ossification
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in intramembranous ossification bone develops from
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fibrous membrane
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intramembranous ossification used for formation of
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flat bones (skull + clavicle)
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intramembranous ossification step 1 of 3
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formation of bone matrix within fibrous membrane
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intramembranous ossification step 2 of 3
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formation of woven bone
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intramembranous ossification step 3 of 3
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formation of compact bone plates
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intramembranous ossification step 1 of 3 - 4 details
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initial ossification site (8wks) - ossification center appears in the fibrous CT membrane - osteoid secreted by osteoblast - osteoid becomes mineralized
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intramembranous ossification step 2 of 3 - 1 detail
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network of bony trabeculae form woven bone
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intramembranous ossification step 3 of 3 - 2 details
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trabeculae thicken at the edge, forming compact bone - spongy bone remains in the center
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endochondral ossification bone develops from ____ ____ model
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hyaline cartilage
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endochondral ossification used for formation of most bones of the ____ (2nd month)
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skeleton
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endochondral ossification step 1 of 5
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formation of bone collar around hyaline cartilage model
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endochondral ossification step 2 of 5
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deterioration of cartilage matrix
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endochondral ossification step 3 of 5
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formation of spongy bone by periosteal
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endochondral ossification step 4 of 5
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formation of medullary cavity
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endochondral ossification step 5 of 5
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ossification of epiphyses
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endochondral ossification step 1 of 5 - 2 details
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perichondrium around hyaline cartilage model converted to periosteum - osteoblasts secret osteoid onto external shaft of "hyaline" bone
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endochondral ossification step 2 of 5 - 1 detail
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matrix of hyaline shaft deteriorates
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endochondral ossification step 3 of 5 - 3 details
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periosteal bud invade the internal cavity - contains blood vessels + osteoids - osteoblasts produce trabeculae of bone
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endochondral ossification step 4 of 5 - 1 detail
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osteoclasts break down new bone forming a medullary cavity
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endochondral ossification step 5 of 5 - 3 details
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secondary ossification centers form in epiphyses shortly before or after birth - spongy bone form - hyaline cartilage remains only at the epiphyseal plate + articular surface
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