anatomy

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Author:
Anonymous
ID:
101489
Filename:
anatomy
Updated:
2011-09-13 16:19:04
Tags:
osteogenesis
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Description:
test 1
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  1. intramembranous ossification
    flat bones, facial bones, mandible, collar bone
  2. delevopment of ossification center
    • 1st step of IO
    • osteoblats secrete extracellular fluid
  3. calcification
    • 2nd step of IO
    • calcium and other mineral salts are deposited and extracellular matrix hardens
  4. formation of trabeculae
    • step 3 of IO
    • extracellular matrix develops into trabeculae that fuse to form spongy bone
  5. development of periosteum
    • step 4 of IO
    • mesechyme at end condenses bone to develop the periosteum
  6. endochondral ossification
    all other bones
  7. development of cartilage model
    • step 1 of EO
    • mesenchymal cells develop into chondroblasts which form the cartilage model
  8. growth of cartilage model
    • step 2 of EO
    • growth occurs by cell division of chrodocytes
  9. developent of primary ossification center
    • step 3 of EO
    • bone tissue replaced by most cartilage
  10. development of medullary cavity
    • step 4 of EO
    • bone breakdown by osteoclasts forms the medullary cavity
  11. delelopment of 2nd ostification center
    • step 5 of EO
    • occurs in epises of the bone
  12. formation of articular cartilage and epiphyseal plate
    • step 6 of EO
    • both structures consist of hyaline cartilage

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