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spinothalamic tract

 - 2 dictionary results
Medical Dictionary

Main Entry: spinothalamic tract
Function: noun
: any of four tracts of nerve fibers of the spinal cord that are arranged in pairs with one member of a pair on each sideand that ascend to the thalamus by way of the brain stem: a : one on each side of the anterior median fissure that carries nerve impulses relating to the sense of touch called alsoanterior spinothalamic tract, central spinothalamic tract b : one on each lateral part of the spinal cord that carries nerve impulses relating to the senses of touch,pain, and temperature called also lateral spinothalamic tract
Merriam-Webster's Medical Dictionary, © 2002 Merriam-Webster, Inc.
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Medical Dictionary

spinothalamic tract spi·no·tha·lam·ic tract (spī'nō-thə-lām'ĭk)
n.
A large ascending bundle of fibers in the ventral half of the lateral funiculus of the spinal cord, arising in the posterior horn at all levels of the cord and continuing into the brainstem. It is composed in the spinal cord of a lateral part that conveys impulses associated with pain and temperature sensation and of an anterior part that is involved in tactile sensation.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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