The ulnar flexor of the wrist
The ulnar flexor of the wrist , m. Flexor carpi ulnaris, occupies the medial margin of the forearm. It has a long muscular abdomen and a comparatively thick tendon. There are two heads; A) the head of the head, caput humerale, comes from the medial epicondyle of the humerus and the intermuscular septum; and b) the ulnar head, caput ulnare, - from the elbow, the upper 2/3 of the posterior surface of the ulna and the fascia of the forearm. Going down, the tendon passes under the flexor retainer, covering the sesamoid pea, os pisiforme, and, passing into the pea-hook and pea-papular ligament, is attached to the hook-shaped and V metacarpal bones.
Function: bends the brush and participates in its reduction.
Innervation: n. Ulnaris (CVII-CVIII).
Blood supply: aa. Collaterales ulnares, a. Brachialis, a. Ulnaris.
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