Description

Origin: Long head: scapula

Insertion: Olecranon process of ulna

Artery: Profunda brachii

Nerve: Radial nerve

Action: Extends forearm, caput longum adducts shoulder

Antagonist: Biceps brachii muscle

Description:
The long head arises by a flattened tendon from the infraglenoid tuberosity of the scapula, being blended at its upper part with the capsule of the shoulder-joint; the muscular fibers pass downward between the two other heads of the muscle, and join with them in 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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