Ulnar artery (Arteria ulnaris)
Educational content only — not medical advice.
Anatomy
The larger brachial branch, descending beside the ulnar nerve behind pronator teres, then through the Guyon canal lateral to the ulnar nerve; it forms the dominant superficial palmar arch feeding the common digital arteries to the fingers.
Clinical notes
Thrombosis from repetitive hammering (hypothenar hammer syndrome) turns the little finger blue and cold; the Allen test verifies arch competence before radial-graft harvesting.
Related structures
Educational references
FAQ
What is the role of the Ulnar artery?
The larger brachial branch, descending beside the ulnar nerve behind pronator teres, then through the Guyon canal lateral to the ulnar nerve; it forms the dominant superficial palmar arch feeding the common digital arteries to the fingers.
Why is the Ulnar artery clinically important?
Thrombosis from repetitive hammering (hypothenar hammer syndrome) turns the little finger blue and cold; the Allen test verifies arch competence before radial-graft harvesting.
Source & license
BodyParts3D, © The Database Center for Life Science licensed under CC Attribution 4.0 International (https://creativecommons.org/licenses/by/4.0/). license details