Definition for Vagus nerve
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Revision as of 16:24, 23 October 2013 by Padre (Talk | contribs) (Created page with "The vagus nerve is also called '''pneumogastric nerve''' and cranial nerve X. Upon leaving the medulla between the medullary pyramid and the inferior cerebellar peduncle, it exte...")
The vagus nerve is also called pneumogastric nerve and cranial nerve X. Upon leaving the medulla between the medullary pyramid and the inferior cerebellar peduncle, it extends through the jugular foramen, then passes into the carotid sheath between the internal carotid artery and the internal jugular vein down below the head, to the neck, chest and abdomen, where it contributes to the innervation of the viscera. Besides output to the various organs in the body, the vagus nerve conveys sensory information about the state of the body's organs to the central nervous system. 80-90% of the nerve fibers in the vagus nerve are afferent (sensory) nerves communicating the state of the viscera to the brain.
