| Endosteum | |
|---|---|
 Endosteum covers the inside of bones, and surrounds themedullary cavity. | |
| Identifiers | |
| TA98 | A02.0.00.038 |
| TA2 | 387 |
| TH | H2.00.03.7.00022 |
| FMA | 32692 |
| Anatomical terminology | |
Theendosteum (pl.:endostea) is a thin vascular membrane ofconnective tissue that lines the inner surface of the bony tissue that forms themedullary cavity of longbones.[1][2]
This endosteal surface is usually resorbed during long periods ofmalnutrition, resulting in lesscortical thickness.[3]
The outer surface of a bone is lined by a thin layer of connective tissue that is very similar inmorphology and function to endosteum. It is called theperiosteum, or the periosteal surface. Duringbone growth, the width of the bone increases asosteoblasts lay new bone tissue at the periosteum. To prevent the bone from becoming unnecessarily thick,osteoclasts resorb the bone from the endosteal side.
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