Haversian canal

Haversian Canal

The Haversian Canal (pronunciation: /hævərˈsiːən/), also known as the osteonic canal, is a series of microscopic tubes in the outermost region of bone that allow blood vessels and nerves to travel through them. These canals are essential for the survival of the individual osteocytes that are located in the surrounding bone tissue.

Etymology

The Haversian Canal is named after the British physician Clopton Havers, who first described them in 1691. The term "canal" is derived from the Latin word "canalis" which means "channel" or "pipe".

Structure

Each Haversian Canal typically contains one or two capillaries and nerve fibres. The canals and the surrounding lamellae (concentric rings of matrix) form the functional unit called the Haversian system or osteon.

Function

The Haversian Canals form a network of passages for nutrients and oxygen to reach the osteocytes, and for the removal of waste products. They also play a crucial role in the repair and maintenance of bones.

Related Terms

Osteon: The basic unit of structure in compact bone, consisting of a Haversian Canal and its surrounding lamellae.
Lamellae: Concentric rings of matrix that surround the Haversian Canal.
Osteocyte: A mature bone cell that maintains the mineral matrix of bone.
Clopton Havers: The British physician who first described the Haversian Canals.