pyramidal decussation

Medical Dictionary

pyramidal decussation n.
Crossing of the bundles of the pyramidal tracts at the lower border of the medulla oblongata. Also called motor decussation.

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