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chapter 6 6.1 blue 6.2 green 6.3 light blue 6.4-6.5 orange 6.6 purple…

- - - - micoscopic features of bone: osteocytes, lacunae, lamelle, canaliculi
    - - compact: basic functional unit is the osteon: within an osteon the ostecytes are arranged in cncentric layers around a central canal, contains one or more blood vessels, lamellae are cylindrical oriented parallel to the long axis of the central canal.
      - spongy: different lamellar arrangment and no osteons, rods or plates called trabeculae, frequent branchings of the thin trabeculae create an open network, canaliculi radiating from of spongy bone end at the exposed surfaces of the trabeculae where nutrients and wastes diffuse between the marrow and osteocytes