Descripción

Origin: Lateral head: posterior humerus

Insertion: Olecranon process of ulna

Artery: Profunda brachii

Nerve: Radial nerve

Action: Extends forearm

Antagonist: Biceps brachii muscle

Description:
The lateral head arises from the posterior surface of the body of the humerus, between the insertion of the Teres minor and the upper part of the groove for the radial nerve, and from the lateral border of the humerus and the lateral intermuscular septum; the fibers from this origin converge toward the tendon of insertion.


This definition incorporates text from a public domain edition of Gray's Anatomy (20th U.S. edition of Gray's Anatomy of the Human Body, published in 1918 – from http://www.bartleby.com/107/).

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