Which Nerve is the Most Posterior Nerve of the Brachial

Question

Which nerve is the most posterior nerve of the brachial plexus?
A) radial nerve
B) ulnar nerve
C) median nerve
D) brachial nerve

Accepted Answer

The ulnar nerve is the most posterior nerve of the brachial plexus. It arises from the medial cord of the brachial plexus and innervates the muscles of the medial forearm and hand.