Which of the Following is NOT True of the Brachial

Question

Which of the following is NOT true of the brachial plexus?
A)Its nerves control the shoulder and upper limb muscles.
B)It gives rise to the musculocutaneous, axillary, radial, median and ulnar nerves.
C)It is mainly derived from spinal nerves C5-C8, and T1.
D)It contains the phrenic nerve and the ansa cervicalis.
E)All of these are true of the brachial plexus.

Accepted Answer

The phrenic nerve and ansa cervicalis are not part of the brachial plexus. The phrenic nerve arises from spinal nerves C3-C5 and innervates the diaphragm for breathing, while the ansa cervicalis is a loop of nerves that innervate the muscles of the neck.