Epiphysis

Definition

The epiphysis is the end part of a long bone, initially growing separately from the shaft. It is made up primarily of spongy bone covered by a thin layer of compact bone.

Related terms

Diaphysis:

The shaft or central part of a long bone, mainly composed of compact bone that provides structural strength.

Articular cartilage: A smooth, white tissue that covers the ends of bones where they come together to form joints, providing frictionless movement and cushioning.

Metaphysis:

The narrow portion of a long bone between the epiphysis and diaphysis that contains the growth plate in developing bones