endosteum

Physiology

(noun)

A membranous vascular layer of cells that line the medullary cavity of a bone.

Related Terms

(noun)

A thin vascular membrane of connective tissue that lines the surface of the bone tissue that forms the medullary cavity of long bones.

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Biology

(noun)

a membranous vascular layer of cells which line the medullary cavity of a bone

Related Terms

Examples of endosteum in the following topics:

  • Cell Types in Bones

    • The osteoblast, the bone cell responsible for forming new bone, is found in the growing portions of bone, including the periosteum and endosteum.

  • Bone Repair

    • The bone marrow (when present), endosteum, small blood vessels, and fibroblasts are other sources of precursor cells.