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Meaning of vagus nerve

va'gus nerve'

Pronunciation: [key]
— pl. vagus nerves.
  1. either one of the tenth pair of cranial nerves, consisting of motor fibers that innervate the muscles of the pharynx, larynx, heart, and thoracic and abdominal viscera, and of sensory fibers that conduct impulses from these structures to the brain.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.