Audio LecturePro Feature Coracobrachialis 0:00 / 0:00 1x 0.25x 0.5x 0.75x 1x 1.25x 1.5x 1.75x 2x 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 (2026) Fig 1The coracobrachialis, biceps brachii and brachialis muscles of the anterior upper arm. 3D ModelPro Feature You've Discovered a Pro Feature Access our 3D Model Library Explore, cut, dissect, annotate and manipulate our 3D models to visualise anatomy in a dynamic, interactive way. Learn More Dissection AtlasPro Feature Prosection of the upper limb. The biceps brachii and coracobrachialis are visible, as well as the major peripheral nerves of the upper limb. Prosection of the upper limb. The biceps brachii and coracobrachialis are visible, as well as the major peripheral nerves of the upper limb. You've Discovered a Pro Feature Access our Dissection Image Library Enhance your understanding with high-resolution dissection images showcasing real-life anatomy. Learn More In gratitude to our body donorsLearn more In gratitude to our body donors We are deeply grateful to the individuals who chose to donate their bodies for the advancement of medical education. Their generosity makes these images possible and provides students and healthcare professionals with an invaluable opportunity to study human anatomy. We recognise the profound contribution made by each donor and their families, and we use these images with the dignity and respect their gift deserves. Acknowledge Frequent questions What is the coracobrachialis muscle? The coracobrachialis is a muscle located in the anterior compartment of the upper arm. It plays a role in flexing the arm at the shoulder joint. Where does the coracobrachialis originate and insert? This muscle originates from the coracoid process of the scapula and inserts on the medial aspect of the humerus shaft, specifically at the level of the deltoid tubercle. What is the primary function of the coracobrachialis? The main function of the coracobrachialis is to facilitate flexion of the arm at the shoulder, while also acting as a weak adductor of the shoulder. Which nerve innervates the coracobrachialis muscle? The coracobrachialis is innervated by the musculocutaneous nerve, which provides the necessary motor supply for its function. What is the blood supply to the coracobrachialis? The blood supply to the coracobrachialis muscle is primarily through the brachial artery, ensuring it receives adequate oxygen and nutrients for its activity. Rate This Article