About 75% of All Parasympathetic Fibers are in the _______

Question

About 75% of all parasympathetic fibers are in the _______ nerves.
A) trigeminal
B) vagus
C) optic
D) trochlear

Accepted Answer

The vagus nerve contains about 75% of all parasympathetic fibers in the body. The other nerves listed (trigeminal, optic, and trochlear) do not contain significant amounts of parasympathetic fibers.