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