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chapter 6 skeletal ((Osteogenic Cells ((Osteogenic Cells, These are stem…

- - - - Osteogenic Cells
      - These are stem cells and they are the only bone cells that undergo cell division.
      - In the endiosteinum these are found around edges of bone that you want to fill in with bone.
      - They will become the Osteoblasts
  - - - Osteoblasts
      - These form the bone - building cells that secrete extracellular matrix.
      - They are making collagen and organic molecules that performthe calcification. They will trap themselves - building bone all around them and they will become Osteocytes
  - - - Osteocytes
      - Mature Bone Cells - these are the main cells in bone tissue.
      - They maintain the bone tissue - dealing with nutrients, waste, etc.
  - - - Osteoclast
      - These come from Monocytes - it is a fusion of up to 50 monocytes with many nuclei.
      - Found in the Endosteinum these cells release lysosome enzymes that break down bone cells to get calcium..
- - - - an inactive fatty form of marrow found in the adult skeleton
- - - - 1)long (humerus, femur)
      - 2)short (carpals)
      - 3)flat (frontal)
      - 4)irregualar (vertabrae)
      - 5)sesamoid (may develop within a tendon)