Long Bone Anatomy

Front

What is the periosteum?

Back

The tough membrane covering the shaft of the bone.

Front

Where are blood cells made in long bones?

Back

Red marrow.

Front

What are lacunae?

Back

The cavities surrounding osteocytes in bone.

Front

What are canaliculi?

Back

Small channels that connect lacunae and allow for communication between osteocytes.

Front

What are central (Haversian) canals?

Back

The channels that run through the center of osteons, containing blood vessels and nerves.

Front

What is the function of yellow marrow?

Back

Yellow marrow stores fat and is found in the medullary cavity of long bones.

Front

What is the role of spongy bone?

Back

Spongy bone provides structural support and houses red marrow.

Front

What are osteons?

Back

The basic structural unit of compact bone, consisting of concentric lamellae.

Front

What is the function of the endosteum?

Back

The membrane lining the inner surface of the bone, involved in bone growth and repair.

Front

What is the difference between compact bone and spongy bone?

Back

Compact bone is dense and forms the outer layer, while spongy bone is lighter and found inside.