The brachial plexus nerve that innervates the flexor muscles of the arm and forearm and the skin on the lateral surface of the forearm is the ________ nerve.
A) ulnar
B) radial
C) median
D) axillary
E) musculocutaneous

Question

Quizplus · Accepted Answer

The nerve that innervates the flexor muscles of the arm and forearm and the skin on the lateral surface of the forearm is the musculocutaneous nerve, which is represented by choice E. The ulnar nerve innervates the flexor muscles of the hand and the skin on the medial surface of the hand. The radial nerve innervates the extensor muscles of the arm and forearm and the skin on the posterior surface of the arm and forearm. The median nerve innervates muscles of the hand and the skin on the palmar surface of the hand. The axillary nerve innervates the deltoid muscle and the skin overlying it.

The Brachial Plexus Nerve That Innervates the Flexor Muscles of the Arm