Medically reviewed by John Carew, MD The greater petrosal nerve branches off of the facial nerve in the skull. Along with a ...

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.

The vagus nerve (also called the vagal nerve) is one of the 12 cranial nerves, which are nerves that start in the brain and ...