Which nerve from the brachial plexus innervates the extensor muscles of the arm and forearm?
A) ulnar
B) musculocutaneous
C) radial
D) median
E) axillary

Question

Quizplus · Accepted Answer

The radial nerve branches from the posterior cord of the brachial plexus and innervates the extensor muscles of the arm and forearm. The ulnar nerve innervates the flexor muscles of the forearm and hand, the musculocutaneous nerve innervates the anterior arm muscles, the median nerve innervates the muscles of the anterior forearm and some intrinsic hand muscles, and the axillary nerve innervates the deltoid muscle.

Which Nerve from the Brachial Plexus Innervates the Extensor Muscles