nucleus of solitary tract

n.
  1. A slender cell column that extends through the dorsal part of the medulla oblongata, is the visceral sensory nucleus of the brainstem, and receives the afferent fibers of the vagus, glossopharyngeal, and facial nerves via the solitary tract.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.