ulnar nerve

noun

Medical Definition of ulnar nerve

: a large superficial nerve of the arm that is a continuation of the medial cord of the brachial plexus, passes around the elbow superficially in a groove between the olecranon and the medial epicondyle of the humerus, and continues down the inner side of the forearm to supply the skin and muscles of the little-finger side of the forearm and hand — see funny bone

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