The coracobrachialis is a muscle in the anterior compartment of the upper arm.
- Attachments: Originates from the coracoid process of the scapula. The muscle passes through the axilla and attaches the medial aspect of the humerus shaft (at the level of the deltoid tubercle).
- Function: Flexion of the arm at the shoulder. It is also a weak adductor at the shoulder.
- Innervation: Musculocutaneous nerve.
- Blood supply: Brachial artery.
By TeachMeSeries Ltd (2025)
Fig 1
The coracobrachialis, biceps brachii and brachialis muscles of the anterior upper arm.