pyramidal tract

Từ điển WordNet v3.1 - WordNet Dictionary

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:
pyramidal motor system, corticospinal tract
• Hypernyms:
motor nerve, efferent nerve, efferent
• Part Holonyms:
central nervous system, CNS, systema nervosum centrale
• Part Meronyms:
basal ganglion