Coracobrachialis

Musculus coracobrachialis

Upper Body Upper BodyArmsShoulders

The coracobrachialis is a small flexor-adductor of the shoulder running from the coracoid process to the medial humerus, sharing its origin with the short head of the biceps. It assists front-raise and pressing patterns and helps resist deviation of the arm from the frontal plane during abduction. Though minor for hypertrophy, it is a relevant landmark because the musculocutaneous nerve pierces it, and tightness here can refer pain into the arm.

Actions

Shoulder flexion, Shoulder adduction

Origin

Apex of the coracoid process of the scapula

Insertion

Impression at the middle of the medial border of the humeral shaft

Innervation

Musculocutaneous nerve (C5–C7)

Blood supply

Muscular branches of the brachial artery

Wikipedia ↗

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