Palmar arch

Palmar Arch

The Palmar arch is a term used in anatomy to describe the arterial network found in the hand. This network is primarily composed of the superficial palmar arch and the deep palmar arch, which are formed by the ulnar artery and radial artery, respectively.

Anatomy

The palmar arches are located in the palm of the hand. They are responsible for supplying blood to the fingers and other structures in the hand. The superficial palmar arch is more distal and primarily formed by the ulnar artery, while the deep palmar arch is more proximal and primarily formed by the radial artery.

Function

The primary function of the palmar arches is to supply blood to the fingers and the muscles of the hand. They also provide a backup route for blood flow in case the main arteries are blocked or damaged, a concept known as collateral circulation.

Clinical significance

The palmar arches are important in a number of clinical procedures, including arterial blood gas sampling and radial artery catheterization. Knowledge of their anatomy is also crucial in surgeries involving the hand.

See also

• Hand
• Ulnar artery
• Radial artery
• Collateral circulation