The greater petrosal nerve branches off of the facial nerve in the skull. Along with a chain of other nerves, it innervates ...

and the 12 cranial nerves of the brain. These nerves are involved in smell, vision, pupil activity, eye movement, taste, hearing, swallowing, and movement of the face, neck, and shoulders.

It’s one of 12 sets of cranial nerves. The trigeminal “nerve” is actually a pair of nerves: one extends along the left side of the face, and one runs along the right side. Each of those ...