pterygopalatine ganglion

n.
  1. A small parasympathetic ganglion in the upper pterygopalatine fossa whose postsynaptic fibers supply the lacrimal and nasal glands.sphenopalatine ganglion
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.