medial longitudinal fasciculus

Medical Dictionary

medial longitudinal fasciculus n.
A longitudinal bundle of fibers extending from the upper border of the mesencephalon into the cervical segments of the spinal cord, composed largely of fibers from the vestibular nuclei ascending to the motor neurons innervating the external eye muscles, and descending to spinal cord segments innervating the musculature of the neck.

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