MICROANATOMY

Detailed explanation-1: -The endosteum is lined by a single thin layer of bone-lining cells (mature osteoblasts) and osteoblasts which form a membrane over endocortical and trabecular bone surfaces to enclose the bone marrow [34]. Osteoclasts can also be present in the endosteum in regions of active bone resorption.

Detailed explanation-2: -Answer and Explanation: The lining of the medullary cavity is called the A) endosteum. The endosteum is a membrane that lines the inner structures of bones, including the medullary cavity. The medullary cavity is composed of bone marrow and adipose tissue.

Detailed explanation-3: -Endosteum is composed of reticular connective tissue. In anatomy, the endosteum is a thin layer of connective tissue, that lines the surface of the bony tissue, that forms the medullary cavity of long bones. Reticular connective tissue is a type of connective tissue.

Detailed explanation-4: -The medullary cavity (medulla, innermost part) is the central cavity of bone shafts where red bone marrow and/or yellow bone marrow (adipose tissue) is stored; hence, the medullary cavity is also known as the marrow cavity.