lateral corticospinal tract

(redirected from lateral pyramidal tract)

lat·er·al cor·ti·co·spi·nal tract

[TA]
those fibers that cross to the opposite side in the corticospinal (pyramidal) decussation and descend in the posterior half of the lateral funiculus of the spinal cord; they are distributed throughout the length of the spinal cord to interneurons of the zona intermedia of the spinal gray matter, to some of the nuclei of the posterior horn, and to interneuron pools of the anterior horn.
See also: corticospinal tract.

lat·er·al cor·ti·co·spi·nal tract

(LCST) (lat'ĕr-ăl kōr'ti-kō-spī'năl trakt) [TA]
Contralateral descending motor tract. Upper motor neurons influence the lower set either directly or indirectly.
References in periodicals archive ?
The fibers that decussate are called the lateral corticospinal tract or the lateral pyramidal tract. The remaining 10% to 15% continue to descend ipsilaterally.