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commissura posterior

 

Definition: a thin band of white matter, crossing from side to side beneath the habenula of the pineal body and over the aditus ad aqueductum cerebri; it is largely composed of fibers interconnecting the left and right pretectal region and related cell groups of the midbrain; it marks the junction of the diencephalon and mesencephalon.

Synonym(s): commissura epithalamica, posterior commissure

Further information

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

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