Definitions:

1. Is a deep vein located in the forearm, that runs alongside the ulnar nerve and drains blood from the ulnar side of the forearm and the hand. NOUN
   • The ulnar vein, located on the medial side of the forearm, is commonly used for blood sampling.
2. One of the major veins in the forearm that is responsible for emptying deoxygenated blood from the lower section of the forearm and the hand back towards the heart. NOUN
   • The ulnar vein is part of the superficial venous system of the upper extremity.

Synonyms:

• vena ulnaris