Structure of a Long Bone

Front

What is the Distal Epiphysis?

Back

The Distal Epiphysis is the end part of a long bone that is farthest from the body's center. It is involved in joint formation and is covered by articular cartilage.

Front

What is the Proximal Epiphysis?

Back

The Proximal Epiphysis is the end part of a long bone that is closest to the body's center. It plays a crucial role in joint formation and is also covered by articular cartilage.

Front

What is Articular Cartilage?

Back

Articular Cartilage is a smooth, white tissue that covers the ends of bones where they come together to form joints. It reduces friction and absorbs shock.

Front

What is the Diaphysis?

Back

The Diaphysis is the long, tubular shaft of a long bone, which provides strength and support. It contains the medullary cavity.

Front

What is the Epiphyseal Line?

Back

The Epiphyseal Line is a remnant of the growth plate (epiphyseal plate) in a long bone, indicating where growth occurred during childhood.

Front

What is the Endosteum?

Back

The Endosteum is a thin membrane that lines the inner surface of the medullary cavity in long bones, involved in bone growth and repair.

Front

What is Compact Bone?

Back

Compact Bone is the dense, hard outer layer of bone that provides strength and support, making up the majority of the bone's structure.

Front

What is Spongy Bone?

Back

Spongy Bone, also known as cancellous bone, is the lighter, porous inner layer of bone that contains red marrow and is found at the ends of long bones.

Front

What is the Marrow Cavity?

Back

The Marrow Cavity, or Medullary Cavity, is the hollow space within the diaphysis of long bones that contains bone marrow.

Front

What is Yellow Marrow?

Back

Yellow Marrow is a type of bone marrow found in the marrow cavity of long bones, primarily composed of fat cells and involved in energy storage.