pyramidal tract


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pyramidal tract

n.
A major pathway of the central nervous system, originating in the sensorimotor areas of the cerebral cortex and generally descending through the brainstem to the spinal cord. The fibers of the pyramidal tract transmit motor impulses that control voluntary movement.

pyram′idal tract`


n.
any of the bundles of motor fibers extending from the cerebral hemispheres into the medulla and spinal cord.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.pyramidal tract - any 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 cordpyramidal tract - any 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
efferent, efferent nerve, motor nerve - a nerve that conveys impulses toward or to muscles or glands
central nervous system, CNS, systema nervosum centrale - the portion of the vertebrate nervous system consisting of the brain and spinal cord
basal ganglion - any of several masses of subcortical grey matter at the base of each cerebral hemisphere that seem to be involved in the regulation of voluntary movement
References in periodicals archive ?
There was no evidence of sensory or pyramidal tract involvement.
They are referred as the ventral pyramidal tract or the anterior cortico-spinal tract since they travel down the ventral aspect of the spinal cord.
The subtle decreased fine fingers movements as well as spasticity of his right upper extremity were indications of pyramidal tract involvement.