The ulnar artery is an important blood vessel that runs through the arm, delivering oxygen-rich blood to the hand and fingers. While many people may be unfamiliar with the term "ulnar artery", there are a variety of synonyms that can be used to describe this essential component of the circulatory system. Some of the most common synonyms include the ulnar artery proper, the superior ulnar collateral artery, and the deep ulnar artery. Other related terms may include ulnar collateral arteries, which are smaller blood vessels that also serve the hand and fingers, as well as the radial artery, which runs parallel to the ulnar artery in the forearm and also plays a key role in maintaining healthy blood flow throughout the body.