Question

What is the most important nerve from the cervical plexus? Why is this nerve so important?

a) Radial nerve, controls hand and wrist movements
b) Sciatic nerve, responsible for lower limb function
c) Phrenic nerve, controls diaphragm for breathing
d) Ulnar nerve, responsible for sensation in the forearm

Answer 1

The phrenic nerve is the most important nerve from the cervical plexus as it controls the diaphragm for breathing.

Step-by-step explanation:

The most important nerve from the cervical plexus is the phrenic nerve. This nerve is responsible for controlling the diaphragm, which is the main muscle involved in breathing. The phrenic nerve connects to the diaphragm at the base of the thoracic cavity, and without it, the diaphragm would not function properly and breathing would be severely affected.