Brain: Median aperture
Scheme of roof of fourth ventricle. The arrow is in the foramen of Magendie.
Latin	apertura mediana ventriculi quarti
Gray's	subject #187 798
NeuroNames	hier-638

The median aperture of the brain (or foramen of Magendie) is an opening in the hollow nerve tube, connecting the fourth ventricle of the brain with the subarachnoid space.

The median aperture, along with the two lateral apertures (foramina of Luschka), one on the left and one on the right, are the three primary routes for cerebrospinal fluid to escape into the cisterna magna.

[edit] Eponym

The Foramen of Magendie is named for François Magendie, who first described it.^[1]

[edit] References

• Netter, Frank H. (1989) Atlas of Human Anatomy. Summit, NJ: Ciba-Geigy Corporation.
• Williams, Peter L.; Warwick, Roger; Dyson, Mary; & Bannister, Lawrence H. (1989) Gray's Anatomy (37th ed.). New York: Churchill Livingstone.

[edit] External links

• Roche Lexicon - illustrated navigator, at Elsevier 13048.000-3

v • d • e Ventricular system, rhombencephalon, met- and myel-: fourth ventricle (TA A14.1.05.701-726, GA 9.797) Roof (dorsal) rostral: Superior medullary velum (Frenulum) caudal: Inferior medullary velum · Taenia of fourth ventricle Floor/rhomboid fossa (ventral) rostral (pons): Facial colliculus · Locus coeruleus caudal (medulla}: Vagal trigone · Hypoglossal trigone · Area postrema · Obex Medial eminence · Sulcus limitans Apertures Median/Magendie · Lateral recess to Lateral/Luschka Other Tela chorioidea of fourth ventricle · Fastigium

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