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Medical Term:

median aperture of fourth ventricle


the large midline opening in the posterior inferior part of the roof of the fourth ventricle, connecting the ventricle with the posterior cerebellomedullary cistern (cisterna magna).

Synonym(s): apertura mediana ventriculi quartiTA, arachnoid foramen, foramen of Magendie

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