tract

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Related to motor tract: pyramidal motor system, Pyramidal Tracts

tract

1
1. Anatomy a system of organs, glands, or other tissues that has a particular function
2. a bundle of nerve fibres having the same function, origin, and termination

tract

2
RC Church an anthem in some Masses
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Tract

 

in the central nervous system, any one of several groups of closely placed nerve fibers having a common morphological structure and common functions. Tracts are divided by function into associative tracts, which unite various sections of the cerebral cortex in the same hemisphere; commisural tracts, which connect both hemispheres and ensure their cooperative activity; and projection tracts, which unite the cerebral cortex with lower brain formations and, through them, with the periphery.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.
References in periodicals archive ?
Specifically, we learned that abnormalities of DTI metrics in the motor tracts correspond to contralateral weakness on physical examination and that DTI metrics, including eigenvalues, can predict outcome (Figures 6 and 7).
Based on our previous results in stimulating nerve regeneration in the long motor tracts
A very important set of secondary motor tracts which come from other areas of the brain groups are also important for understanding cerebral palsy.