The Brachial Plexus Gives Rise to All of the Following

Question

The brachial plexus gives rise to all of the following nerves except the
A) radial.
B) median.
C) ulnar.
D) musculocutaneous.
E) phrenic.

Accepted Answer

The phrenic nerve is not derived from the brachial plexus. It originates from cervical spinal nerves C3-C5 and innervates the diaphragm, which is important for breathing. The rest of the nerves listed (radial, median, ulnar, and musculocutaneous) are all derived from the brachial plexus, which is a network of nerves that originates from spinal nerves C5-T1 and supplies the upper limb.