Periosteum vs. Endosteum

Periosteumnoun

A membrane surrounding a bone.

Periosteumnoun

The membrane of fibrous connective tissue which closely invests all bones except at the articular surfaces.

Periosteumnoun

a dense fibrous membrane covering the surface of bones (except at their extremities) and serving as an attachment for tendons and muscles; contains nerves and blood vessels that nourish the enclosed bone

Periosteumnoun

a dense layer of vascular connective tissue enveloping the bones except at the surfaces of the joints.

Periosteum

The periosteum is a membrane that covers the outer surface of all bones, except at the articular surfaces (i.e. the parts within a joint space) of long bones.

Endosteumnoun

(biology) A membranous vascular layer of cells which line the medullary cavity of a bone; an internal periosteum.

Endosteumnoun

The layer of vascular connective tissue lining the medullary cavities of bone.

Endosteumnoun

vascular membrane that lines the inner surface of long bones

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.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.