corticospinal tract

corticospinal tract
corticospinal tract n any of four columns of motor fibers of which two run on each side of the spinal cord and which are continuations of the pyramids of the medulla oblongata: PYRAMIDAL TRACT:
a) LATERAL CORTICOSPINAL TRACT
b) VENTRAL CORTICOSPINAL TRACT

Medical dictionary. 2011.

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  • Corticospinal tract — Pyramidal tract redirects here. This page refers to the nerve fibres underlying the pyramids. For the actual area of the brain, Pyramids, see Pyramid of medulla oblongata. Brain: Corticospinal tract Deep dissection of brain stem. Lateral view. (… …   Wikipedia

  • corticospinal tract — noun 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 • Syn …   Useful english dictionary

  • Lateral corticospinal tract — labeled in red at upper left. Latin tractus corticospinalis lateralis, fasciculus cerebrospinalis lateralis …   Wikipedia

  • Anterior corticospinal tract — seen in red at bottom center in figure (text tag found at upper left) …   Wikipedia

  • ventral corticospinal tract — n a band of nerve fibers that descends in the ventrolateral part of the spinal cord and consists of fibers arising in the motor cortex of the brain on the same side of the body and not crossing over in the decussation of pyramids called also… …   Medical dictionary

  • anterior corticospinal tract — n VENTRAL CORTICOSPINAL TRACT …   Medical dictionary

  • lateral corticospinal tract — n a band of nerve fibers that descends in the posterolateral part of each side of the spinal cord and consists mostly of fibers arising in the motor cortex of the contralateral side of the brain and crossing over in the decussation of pyramids… …   Medical dictionary

  • corticospinal tract anterior — tractus corticospinalis anterior …   Medical dictionary

  • corticospinal tract crossed — tractus corticospinalis lateralis …   Medical dictionary

  • corticospinal tract direct — tractus corticospinalis anterior …   Medical dictionary

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