- pyramidal tract
- nounany of the important motor nerves on each side of the central nervous system that run from the sensorimotor areas of the cortex through the brainstem to motor neurons of the cranial nerve nuclei and the ventral root of the spinal cord• Part Meronyms: ↑basal ganglion
* * *noun: any of four columns of motor fibers that run in pairs on each side of the spinal cord and that are continuations of the pyramids of the medulla
* * *Anat.any of four tracts of descending motor fibers that extend in pairs down each side of the spinal column and function in voluntary movement.[1885-90]
Useful english dictionary. 2012.