MRCP UK EXAMINATIONS

Detailed explanation-1: -The radial nerve provides motor (movement) and sensory functions to the arm. It: Stimulates muscles so you can straighten and raise your elbows, wrists, hands and fingers. Provides touch, pain and temperature sensations to portions of the back of the upper arm, forearm, and to the back of the hand and fingers.

Detailed explanation-2: -The median nerve predominantly provides motor innervation to the flexor muscles of the forearm and hand as well as those muscles responsible for flexion, abduction, opposition, and extension of the thumb.

Detailed explanation-3: -Radial nerve. The radial nerve supplies muscles that straighten the elbow, and lift and straighten the wrist, thumb, and fingers. The radial nerve gives feeling to the skin on the outside of the thumb and on the back of the hand and the index finger, middle finger, and half of the ring finger.

Detailed explanation-4: -The brachial plexus carries the majority of the innervation to the forearm; however, a small amount of sensory innervation comes from the medial antebrachial cutaneous nerve. [6] The brachial plexus derives from the ventral rami of spinal nerves C5 through T1.

Detailed explanation-5: -It gives sensory supply to dorsal aspect of hand, dorsal aspect of thumb, index finger, middle finger and lateral side of ring finger except the nail beds, which are supplied by proper digital branches of median nerve.