Corpus: Basilic vein

The basilic vein originates on the ulnar side of the dorsal venous plexus of the hand (dorsal venous network of the hand). Afterward, the vein ascends in a slight twist around the ulnar side of the forearm to the cubital fossa. Here, it connects with the cephalic vein via the median cubital vein. From there, it continues proximally to enter the brachial fascia through a fascial slit (basilic hiatus) at about the midpoint of the upper arm and then descends between the neighbouring muscles into the depth. At the lower edge of the teres major muscle, it receives the anterior and posterior circumflex humeral veins, to shortly thereafter form the axillary vein together with the brachial vein.

For most of its course, the basilic vein lies superficially in the subcutaneous tissue. The exact course of the vein varies greatly between individuals. Due to its relatively large lumen, it is suitable for venipuncture and the insertion of a peripheral venous catheter.