EVERYDAY SCIENCE

Detailed explanation-1: -The periosteum covers the entire outer surface except where the epiphyses meet other bones to form joints (Figure 6.8). In this region, the epiphyses are covered with articular cartilage, a thin layer of cartilage that reduces friction and acts as a shock absorber.

Detailed explanation-2: -At the joint, the epiphysis is covered with articular cartilage; below that covering is a zone similar to the epiphyseal plate, known as subchondral bone. Structure of a long bone, with epiphysis labeled at top and bottom. The epiphysis is filled with red bone marrow, which produces erythrocytes (red blood cells).

Detailed explanation-3: –The epiphyses are covered by a thin layer of compact tissue. Their interior contains spongy bones and red marrow. On its outer surface, the articular portion of the epiphysis is coated with hyaline cartilage.

Detailed explanation-4: -In this region, the epiphyses are covered with articular cartilage, a thin layer of hyaline cartilage that reduces friction and acts as a shock absorber.

Detailed explanation-5: -Articular cartilage is a thin layer of specialized connective tissue with unique viscoelastic properties. Its principal function is to provide a smooth, lubricated surface for low friction articulation and to facilitate the transmission of loads to the underlying subchondral bone.