Find out what you need to know about your facial nerves and their function. Learn how these nerves can affect your health.

Medically reviewed by John Carew, MD The greater petrosal nerve branches off of the facial nerve in the skull. Along with a chain of other nerves, it innervates (provides nerve function to) the ...

The post-Bell’s palsy HFS may look similar to the idiopathic variety, but voluntary contraction of the facial muscles often results in an involuntary contraction of adjacent muscles due to ...