The Skeletal System I. Functions


VI. Structure of Short, Irregular, and Flat Bones



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VI. Structure of Short, Irregular, and Flat Bones

  • Thin plates of



  • Have no diaphysis or epiphysis because they are not cylindrical.

  • Contain

  • In flat bones, the internal spongy bone layer is known as the diploë, and the whole arrangement resembles a stiffened sandwich



VII. Bone Marrow

  • Bone marrow is a general term for the



  • There are 2 main types:

  • Red bone marrow = blood cell forming tissue = hematopoietic tissue

      • Red bone marrow




VIII. Microscopic Structure of Compact Bone




  • Imagine these osteons as weight-bearing pillars that are arranged parallel to one another along the long axis of a compact bone.

Each osteon






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