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median aperture of fourth ventricle


Definition: 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

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