MICROANATOMY

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 correct answer is c-the region of a long bone between the end of the bone (known as the epiphysis) and the shaft (known as the diaphysis) is the metaphysis. The inside of the bone is known as the medullary cavity and is the location of the bone marrow.

Detailed explanation-4: -The epiphysis is the long shaft of bones.