Basilic vein

A major vein in the upper limb that drains blood from the forearm and part of the hand.

The basilic vein is a large superficial vein located in the upper limb. It runs along the inner side of the arm and is responsible for draining deoxygenated blood from the forearm and hand before it returns to the heart. Notably, it plays a crucial role in venous return and is often used for venipuncture due to its accessibility.

Terminologia Anatomica

vena basilica

System

Circulatory system

Function

The basilic vein's primary function is to collect deoxygenated blood from the superficial structures of the forearm and hand. Its blood is then directed towards the deeper venous system before returning to the heart via the subclavian vein. This vein plays a significant role in regulating blood flow and volume in the arm, ensuring that metabolic waste products are effectively removed. Additionally, the basilic vein serves as an important pathway for venous access in medical procedures, such as intravenous therapy and blood sampling, owing to its location and size. Its proximity to the skin surface makes it a preferred site for healthcare providers when requiring access to the circulatory system.

Location

The basilic vein is located in the medial aspect of the arm, beginning at the anatomical snuffbox, which is situated near the wrist. It ascends along the inner side of the forearm before traveling up the arm. It typically joins with the brachial veins at the elbow region, thereby contributing to the formation of the axillary vein. The basilic vein can be easily distinguished as it runs parallel to the biceps brachii muscle, and its pathway can be traced along the inner side of the arm, making it a prominent feature in anatomical studies of the upper limb.

Did You Know?

The basilic vein is often used in medical practices for drawing blood due to its size and accessibility.
This vein is superficial and lies just beneath the skin, making it more prone to variations in visibility or palpability based on an individual's body composition.
Along its path, the basilic vein can be accompanied by a series of small branches that drain various superficial structures of the arm.
The distinct route of the basilic vein has made it a reliable landmark for surgeons and medical professionals during procedures involving the upper limb.