• synonyms
pontomedullary groove in Medicine

pontomedullary groove

(pŏn′tō-mĕdl-ĕr′ē, -mə-dŭlə-rē)
  1. The transverse groove on the ventral aspect of the brainstem that demarcates the pons from the medulla oblongata and from which emerge the sixth, seventh, and eighth cranial nerves.
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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.