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cerebral peduncle

 

Definition: originally denoting either of the two halves of the midbrain (a relatively narrow “neck” connecting the forebrain to the hindbrain); this term has been variably used to designate only those large bundles of corticofugal fibers forming the crus cerebri or to designate the crus cerebri plus the midbrain tegmentum; this latter, more inclusive, usage (crus cerebri and midbrain tegmentum) is preferred by some; the substantia nigra, while a part of the base of the peduncle (basis pedunculi), is considered a structure separating the midbrain tegmentum from the crus cerebri.

Synonym(s): pedunculus cerebriTA

See Also: crus cerebri

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© Copyright 2017 Wolters Kluwer. All Rights Reserved. Review Date: Sep 19, 2016.
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