MRCP UK EXAMINATIONS

Detailed explanation-1: -The musculocutaneous nerve innervates the three muscles of the anterior compartment of the arm: the coracobrachialis, biceps brachii, and brachialis muscles. It is also responsible for cutaneous innervation of the lateral forearm.

Detailed explanation-2: -The musculocutaneous nerve is responsible for innervating the flexors of the arm, including the biceps brachii, coracobrachialis, and the medial aspect of the brachialis. The radial nerve innervates the triceps brachii, lateral aspect of the brachialis, anconeus, brachioradialis, and extensor carpi radialis longus.

Detailed explanation-3: -The musculocutaneous nerve innervates the anterior compartment of arm (BBC): Biceps: flexes elbow, supinates forearm. Brachialis: flexes elbow. Coracobrachialis: flexes and adducts the arm at the glenohumeral joint.

Detailed explanation-4: -The musculocutaneous nerve arises directly from the lateral cord of the brachial plexus (Figure 31–8). In the upper arm, it pierces the coracobrachialis muscle to run in the fascia between the biceps and brachialis muscles.

Detailed explanation-5: -Description. The Musculocutaneous nerve is a large branch of the Brachial Plexus.It is called musculocutaneous nerve as it supplies the muscles of the front of the arm and skin of lateral side of forearm. The Musculocutaneous nerve is a terminal branch of the lateral cord of the Brachial Plexus.