Accessory cephalic vein

Accessory cephalic vein

The veins of the right axilla, viewed from in front (Accessory cephalic vein labeled at upper right)

The Accessory cephalic vein is a vein that arises from the network of veins on the dorsum of the hand and ascends on the radial side of the forearm and arm to the region of the deltoid muscle, where it usually terminates in the cephalic vein.

Structure

The accessory cephalic vein is a superficial vein that is not always present in the human body. It arises from the dorsal venous network of the hand and ascends on the radial side of the forearm. It then continues up the arm, usually terminating in the cephalic vein near the deltoid muscle. However, in some individuals, it may join the cephalic vein at a higher or lower point, or it may not be present at all.

Function

As a vein, the primary function of the accessory cephalic vein is to return deoxygenated blood from the tissues of the hand and forearm to the heart. It is part of the superficial venous system, which is responsible for draining approximately 10% of the total blood flow from the limbs.

Clinical significance

The accessory cephalic vein is often used for venipuncture (the collection of blood from a vein) and for the insertion of intravenous (IV) lines. Its superficial location makes it easily accessible for these procedures.

See also

• Cephalic vein
• Dorsal venous network of hand
• Venipuncture