Anterior chest wall and upper arm showing coracobrachialis
|Function:||Flexion and adduction of the humerus at the shoulder|
|Origin:||Coracoid process of the scapula|
|Innervation:||Musculocutaneous nerve (C7)|
|Search for Coracobrachialis in Gray's.|
Coracobrachialis is situated in the superiomedial part of the upper arm. It arises from the apex of the coracoid process with the tendon of the short head of biceps brachii, as well as from the intermuscular septum between coracobrachialis and biceps. Its insertion is via a flat tendon between the origins of triceps and brachialis. It is perforated by the musculocutaneous nerve.
- An impression in the middle of the medial aspect of the body of the humerus, between the origins of triceps and brachialis.
- May have a bony head reaching the medial epicondyle
- May rarely have a short head to the lesser tubercle