The coracobrachialis is one of 3 muscles in the anterior compartment of the arm. The other two muscles are the biceps brachii and the brachialis.

Origin
Apex of coracoid process
Insertion
Medial side of proximal shaft of humerus
Innervation
Musculocutaneous nerve (C5, C6, and C7)
Blood Supply
Brachial artery
ActionAdduction of the humerus
Flexion of the arm at the glenohumeral joint