Endosteum

The endosteum (plural endostea) is a thin vascular membrane of connective tissue that lines the inner surface of the bony tissue that forms the medullary cavity of long bones.[1][2]

Endosteum
Endosteum covers the inside of bones, and surrounds the medullary cavity.
Identifiers
TAA02.0.00.038
THH2.00.03.7.00022
FMA32692
Anatomical terminology

This endosteal surface is usually resorbed during long periods of malnutrition, resulting in less cortical thickness.

The outer surface of a bone is lined by a thin layer of connective tissue that is very similar in morphology and function to endosteum. It is called the periosteum, or the periosteal surface. During bone growth, the width of the bone increases as osteoblasts lay new bone tissue at the periosteum. To prevent the bone from becoming unnecessarily thick, osteoclasts resorb the bone from the endosteal side.

Additional images
  • Long bone
gollark: Also, if you've ever seen genetic algorithms, you'll know that they will ruthlessly exploit any quirk of the fitness functions.
gollark: And how do you work out exactly what the evaluator is to count as "harming humans"?
gollark: But you have to define a fitness function.
gollark: Suspiciously human AI.
gollark: Yes, lots of scifi authors and such seemed to assume that we would get suspiciously human AI before, well, computery computers. Probably they just didn't think of the second possibility/

References
  1. Netter, Frank H. (1987). Musculoskeletal system: anatomy, physiology, and metabolic disorders. Summit, New Jersey: Ciba-Geigy Corporation ISBN 0-914168-88-6, p.171
  2. "Definition of ENDOSTEUM". www.merriam-webster.com.


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