The eyelid's motor nerves descend from the facial nerves, which are the seventh pair of cranial nerves. They arise from the lower part of the pons at the base of the brain stem and emerge on the sides of the face. Its motor fibers send impulses to muscles for facial expressions. Other fibers function involuntarily by stimulating the tear gland.
About | Privacy | FAQ | Contact Innerbody.com Copyright (c) 1999 - 2016 HowToMedia, Inc. All rights reserved. The information contained on this site is for educational purposes only and should not be taken as expert advice.