外展拇长肌 - Musculus abductor digiti I [pollicis] longus [Musculus extensor carpi obliquus]

描述

Origin: Lateral surface of the ulna and radius, and the interosseous membrane.

Insertion: Medial on the proximal end of metacarpal 1 where there is a sesamoid bone embedded in it.

Action: Abduction and flexion of the first digit and medial deviation of the forepaw.

Nerve: Radialis.


Text by Antoine Micheau, MD - Copyright IMAIOS

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