Ulnar
Ulnar
Ulnar (/ˈʌlnər/), derived from the Latin word ulna, is a term used in anatomy to refer to the medial aspect of the forearm and hand, specifically relating to the ulna, one of the two bones in the forearm.
Etymology
The term ulnar is derived from the Latin word ulna, which originally meant 'the elbow'. Over time, it came to refer to the bone of the forearm that is on the side opposite to the thumb.
Anatomy
The ulna is the larger and longer of the two bones in the forearm, the other being the radius. The ulna is located on the side of the forearm closest to the body (the medial side) when in the standard anatomical position. The term ulnar is used to describe anything pertaining to this bone, including the ulnar artery, ulnar nerve, and ulnar vein.
Related Terms
- Ulnar artery: The main blood vessel, with oxygenated blood, of the medial aspect of the forearm.
- Ulnar nerve: A nerve that runs near the ulna bone. The ulnar collateral ligament of elbow joint is in relation with the ulnar nerve.
- Ulnar vein: The venous counterpart to the ulnar artery, it drains deoxygenated blood from the medial aspect of the forearm.
- Ulnar deviation: The movement of bending the wrist to the little finger, or ulnar side.
- Ulnar collateral ligament: Ligament of the elbow which connects the humerus to the ulna.
External links
- Medical encyclopedia article on Ulnar
- Wikipedia's article - Ulnar
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