Coracobrachialis muscle

This video tutorial covers the coracobrachialis muscle, detailing its origin at the coracoid process of the scapula and insertion at the medial surface of the humeral shaft. It explains the muscle's innervation by the musculocutaneous nerve and its functions, including flexion, abduction, and inward rotation of the arm. The tutorial also highlights the muscle's role in stabilizing the humeral head. Additional resources for further learning are provided.

Where does the coracobrachialis muscle originate?

• Acromion process of the scapula

• Coracoid process of the scapula

• Glenoid cavity of the scapula

• Spine of the scapula

Which nerve is responsible for the innervation of the coracobrachialis?

• Musculocutaneous nerve

• Ulnar nerve

• Axillary nerve

• Radial nerve

What movement does the coracobrachialis assist with at the shoulder joint?

• External rotation

• Elevation

• Flexion

• Extension

In addition to flexion, what other movement does the coracobrachialis facilitate?

• Supination

• Pronation

• Adduction

• Abduction

What is a key stabilizing function of the coracobrachialis?

• Stabilizing the ulna

• Stabilizing the clavicle

• Stabilizing the scapula

• Stabilizing the humeral head