ANATOMY

Detailed explanation-1: -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. Endosteum covers the inside of bones, and surrounds the medullary cavity.

Detailed explanation-2: -The endosteum lines the inner bone surfaces and is composed of a single layer of connective tissue that lines the surface of the medullary cavity.

Detailed explanation-3: -The trabeculae are covered by the endosteum, which can readily remodel them. The trabeculae may appear to be a random network, but each trabecula forms along lines of stress to direct forces out to the more solid compact bone providing strength to the bone.

Detailed explanation-4: -The periosteum is a layer of fibrous tissue that covers the bone. Compact bone is the dense, hard, smooth outer part of a bone. It surrounds the medullary cavity and contains blood vessels and nerves.

Detailed explanation-5: -The inner medullary cavity is lined with a membrane called the endosteum. The periosteum, as described by Gray, has multiple small vessels tethering it to bone; these vessels provide a major part of its blood supply. The periosteum is attached to bone by fine fibers called Sharpey fibers.