Quick question about the endosteum relating to bone?

  • #1
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Main Question or Discussion Point

Hello everyone,

This is the definition of endosteum from wiki,

The endosteum (plural endostea) is a thin layer of connective tissue which lines the surface of the bony tissue that forms the medullary cavity of long bones.

However I'm of the beleif that endosteum lines the inner surface of all bones. Does it only line medullary cavity or internal surfaces of all bones. Do all bones have medullary cavities by the way. Thanks!!
 

Answers and Replies

  • #2
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Not all bones have a medullary cavity, only those that contain marrow. These are primarily the long bones and vertebra. The periosteum is the membrane surrounding the exterior surface of all bones, except the teeth of course.
 

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