foramen of Magendie

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me·di·an ap·er·ture of fourth ven·tri·cle

[TA]
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).
Farlex Partner Medical Dictionary © Farlex 2012

foramen of Magendie

The unpaired median aperture through which cerebrospinal fluid can leave the fourth ventricle of the brain and flow into the subarachnoid space.
See also: foramen

foramen of Magendie

A small opening at the caudal tip of the fourth ventricle through which cerebrospinal fluid flows from the cerebral ventricles into the subarachnoid space.
Medical Dictionary, © 2009 Farlex and Partners
References in periodicals archive ?
The sequence of grey correlation degree is as follows: harmless pore > porosity > total pore surface area > less harmful pore > most probable pore size > pore fractal dimension > more harmful pore > pore spacing coefficient > harmful pore > area median aperture and average aperture, in the case of 50% loading level and freeze-thaw and drying-wetting cycles.