ANATOMY

Detailed explanation-1: -The diaphysis is the main or midsection (shaft) of a long bone. It is made up of cortical bone and usually contains bone marrow and adipose tissue (fat).

Detailed explanation-2: -The epiphysis is the expanded or rounded end portion of a long bone. It has red bone marrow-producing erythrocytes. The diaphysis is the shaft portion of a long bone with cortical tissue. It has bone marrow and adipose tissue.

Detailed explanation-3: -The shaft of a long bone is called the diaphysis.

Detailed explanation-4: -The outer surface of the bone is covered with a fibrous membrane called the periosteum (peri– = “around” or “surrounding”). The periosteum contains blood vessels, nerves, and lymphatic vessels that nourish compact bone.

Detailed explanation-5: -The diaphysis is the long, curved shaft that contains a central region called the medullary cavity (marrow cavity). It also contains compact bone that is very strong and dense and consists of units called osteons. The compact bone contains the yellow bone marrow that is responsible for storing adipose tissue.