Central canal

Definition

In the context of bone tissue and the skeletal system, the central canal is a microscopic channel running longitudinally in the center of an osteon of mature compact bone, containing blood vessels and nerves. It is crucial for the nourishment and communication within bones.

Related terms

Osteon: The fundamental unit of compact bone, consisting of concentric layers (lamellae) of calcified matrix surrounding a central canal.

Lamellae: These are thin layers of bone tissue that make up the osteon, providing strength and stability to bones by resisting torsional stress.

Periosteum:

A dense layer of vascular connective tissue enveloping the bones except at the surfaces of the joints, serving as a protective layer and aiding in attachment for muscles and ligaments