upper motor neuron


A motor neuron whose cell body is located in the motor area of the cerebral cortex and whose processes connect with motor nuclei in the brainstem or the anterior horn of the spinal cord.

Nearby words

  1. upper extremity,
  2. upper hand,
  3. upper house,
  4. upper klamath lake,
  5. upper mordent,
  6. upper palaeolithic,
  7. upper palatinate,
  8. upper paleolithic,
  9. upper partial tone,
  10. upper peninsula

The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.