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crus cerebri


Definition: specifically, the massive bundle of corticofugal nerve fibers passing longitudinally on the ventral surface of the midbrain on each side of the midline; it consists of fibers descending from the cortex to the tegmentum of the brainstem, pontine gray matter, and spinal cord.

See Also: cerebral peduncle, basis pedunculi

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© Copyright 2018 Wolters Kluwer. All Rights Reserved. Review Date: Sep 19, 2016.