Haversian canal

Definition

A Haversian canal is a microscopic channel found in compact bone. It contains blood vessels and nerves, providing nourishment and sensation to bone cells.

5 Must Know Facts For Your Next Test

1. Haversian canals are part of the Haversian system or osteon, which is the fundamental functional unit of compact bone.
2. They run longitudinally through the bone, parallel to its length.
3. Each Haversian canal is surrounded by concentric lamellae of calcified matrix.
4. The canals connect with each other and with the periosteum, as well as with larger vascular channels called Volkmann's canals.
5. Haversian canals facilitate the exchange of nutrients and waste between blood vessels and osteocytes.

Review Questions

Related terms

Osteon: The basic structural unit of compact bone, consisting of concentric lamellae surrounding a central Haversian canal.

Lamellae: Thin layers of calcified matrix in bone tissue, arranged concentrically around a Haversian canal.

Volkmann's Canals: Channels in bone that run perpendicular to Haversian canals, connecting them to each other and to the periosteum.