Coracobrachialis muscle

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The Coracobrachialis is the smallest of the three muscles that attach to the coracoid process of the scapula. (The other two muscles are the pectoralis minor and the biceps brachii.) It is situated at the upper and medial part of the arm.

It arises from the apex of the coracoid process, in common with the short head of the Biceps brachii, and from the intermuscular septum between the two muscles; it is inserted by means of a flat tendon into an impression at the middle of the medial surface and border of the body of the humerus between the origins of the Triceps brachii and Brachialis.

It is perforated by the musculocutaneous nerve.

Variations

A bony head may reach the medial epicondyle; a short head more rarely found may insert into the lesser tubercle.

External links

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