MICROANATOMY

Detailed explanation-1: -Compact bone is the dense, hard, smooth outer part of a bone. It surrounds the medullary cavity and contains blood vessels and nerves. The medullary cavity is the hollow part of bone that contains bone marrow. The bone marrow makes blood cells and stores fat.

Detailed explanation-2: -Yellow bone marrow This type of bone marrow can be found in the medullary cavity in the shaft of long bones and is often surrounded by a layer of red bone marrow. Yellow bone marrow contains mesenchymal stem cells (marrow stromal cells), which produce cartilage, fat and bone.

Detailed explanation-3: -Spongy bone is found mostly at the ends of bones and contains red marrow. Bone marrow is found in the center of most bones and has many blood vessels. There are two types of bone marrow: red and yellow. Red marrow contains blood stem cells that can become red blood cells, white blood cells, or platelets.

Detailed explanation-4: -A long bone has two parts: the diaphysis and the epiphysis. The diaphysis is the tubular shaft that runs between the proximal and distal ends of the bone. The hollow region in the diaphysis is called the medullary cavity, which is filled with yellow marrow.

Detailed explanation-5: -The medullary cavity is the open area of the inside of the bone that contains the red and yellow bone marrow. The medullary cavity is most pronounced in the long bones, but it can be found in every type of bone. It is surrounded by spongy bone tissue and is lined by a thin membrane. This is the innermost layer of bone.