Name

# Coracobrachialis

Pronunciation

(kor-uh-ko-bra-ke-A-lus)

Origin/Proximal Attachment

Coracoid process of the scapula

Insertion/Distal Attachment

Medial shaft of the humerus, at about its middle

Action/Relevance

Flexes the humerusAssists to adduct the humerus

Innervation

Musculocutaneous nerve (C5, 6, +/-7)

Notes

The Coracobrachialis, the smallest of the three muscles in this region, 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.