MEDICAL PHYSIOLOGY

Detailed explanation-1: -The brachial plexus is a group of nerves that branches from the neck (cervical spine). The brachial plexus travels under the clavicle and through the armpit (axilla). The musculocutaneous nerve travels along the front of the humerus and provides function to the Coracobrachialis, biceps, and brachialis muscles.

Detailed explanation-2: -The brachial plexus is a major network of nerves transmitting signals responsible for motor and sensory innervation of the upper extremities, including the shoulder, arm, and hand. It originates from the ventral rami of C5 through T1 spinal nerves.

Detailed explanation-3: -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.