Which vein is described as a deep arm vein formed from the radial and ulnar veins and draining into the axillary vein?

• A. Cephalic vein
• B. Basilic vein
• C. Brachial vein
• D. Subclavian vein

Answer: (C)

Think about how the deep veins of the arm are organized. The radial and ulnar veins run in the forearm and come together in the arm to form the brachial veins. These brachial veins then drain into the axillary vein as it continues toward the shoulder. So the vein that is formed from the radial and ulnar veins and drains into the axillary vein is the brachial vein.

The other vessels mentioned are not the same: the cephalic and basilic veins are superficial veins on the arm’s surface, not formed from the forearm deep veins. The subclavian vein is a larger vessel that lies further up, becoming the axillary vein as it transitions, but it is not formed from radial and ulnar veins.