EVERYDAY SCIENCE

Detailed explanation-1: -The walls of the diaphysis are composed of dense and hard compact bone. A typical long bone shows the gross anatomical characteristics of bone. The wider section at each end of the bone is called the epiphysis (plural = epiphyses), which is filled with spongy bone. Red marrow fills the spaces in the spongy bone.

Detailed explanation-2: -Most of the diaphysis is formed by compact cortical bone, whereas the inside of the metaphysis and the epiphysis, as well as of short tubular and flat bones contains trabecular (cancellous) bone tissue.

Detailed explanation-3: -The epiphysis is made of spongy cancellous bone covered by a thin layer of compact bone. It is connected to the bone shaft by the epiphyseal cartilage, or growth plate, which aids in the growth of bone length and is eventually replaced by bone.

Detailed explanation-4: -The Anatomy of a Bone Long bones are made up of two types of bone tissue. The diaphysis (central part) of a long bone is composed of compact (cortical) bone. Spongy (cancellous) bone is found at the epiphysis (ends) of long bones and is also found in the pelvic bones, ribs, skull, and the vertebrae.