Magendie, foramen of


Magendie, foramen of
An opening from the fourth ventricle, which is one in a system of four communicating cavities called ventricles within the brain that are continuous with the central canal of the spinal cord. The four ventricles consist of the two lateral ventricles, the third ventricle and the fourth ventricle: {{}}Lateral ventricles: The lateral ventricles are in the cerebral hemispheres. Each lateral ventricle consists of a triangular central body and four horns. The lateral ventricles communicate with the third ventricle through what is called the interventricular foramen (opening). The third ventricle is a median (midline) cavity in the brain that is bounded by the thalamus and hypothalamus on either side. Anteriorly (in front) the third ventricle communicates with the lateral ventricles and posteriorly (in back) the third ventricle communicates with what is called the aqueduct of the midbrain (or the aqueduct of Sylvius). The fourth ventricle is the most inferior (lowest) of the four ventricles of the brain. It extends from the aqueduct of the midbrain to the central canal of the upper end of the spinal cord with which it communicates by the two foramina (openings) of Luschka and the foramen (opening) of Magendie. The ventricles are filled with cerebrospinal fluid, which is formed by structures called choroid plexuses located in the walls and roofs of the ventricles.

Medical dictionary. 2011.

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  • Magendie foramen space — Ma·gen·die foramen, space (mah zhah deґ) [Franзois Magendie, French physiologist, 1783–1855] see under space, and see apertura mediana ventriculi quarti …   Medical dictionary

  • foramen de Magendie — orificio que comunica el cuarto ventrículo con el espacio subaracnoideo. También llamado orificio medio del cuarto ventrículo [A14.1.05.722] imagen anatómica [véase http://www.iqb.es/diccio/f/fo.htm#foramen de magendie] Diccionario ilustrado de… …   Diccionario médico

  • Foramen of Magendie — An opening from the fourth ventricle, which is one in a system of four communicating cavities called ventricles within the brain that are continuous with the central canal of the spinal cord. The four ventricles consist of the two lateral… …   Medical dictionary

  • Foramen — A natural opening. Although a foramen is usually through bone, it can be an opening through other types of tissue, as with the foramen ovale. * * * An aperture or perforation through a bone or a membranous structure. SYN: trema (1). [L. an… …   Medical dictionary

  • Foramen — Fora̱men [aus lat. foramen, Gen.: foraminis= Öffnung, Loch] s; s, ...mina: Loch, Lücke, Öffnung (Anat.). Fora̱mina alveo|la̱ria Mehrz.: 2 3 kleine Öffnungen am Zahnfortsatz des Oberkieferbeins, Durchtrittsstellen für Nerven und Gefäße. Fora̱men… …   Das Wörterbuch medizinischer Fachausdrücke

  • Foramen, interventricular — An opening between the lateral and third ventricles in a system of four communicating cavities within the brain that are continuous with the central canal of the spinal cord. The four ventricles consist of the two lateral ventricles, the third… …   Medical dictionary

  • foramen of magendie — məˌzhänˈdē Usage: usually capitalized M Etymology: after François Magendie died 1855 French physiologist : a passage through the midline of the roof of the fourth ventricle of the brain which together with the foramina of Key and Retzius affords… …   Useful english dictionary

  • Magendie — François, French physiologist, 1783–1855. See foramen of M., Bell M. law, M. law, M. spaces, under space, M. Hertwig sign, M. Hertwig syndrome …   Medical dictionary

  • atresia del agujero de Magendie — Eng. Magendie foramen atresia Síndrome que se manifiesta en niños caracterizado por malformación y estenosis de los agujeros de Luschka y Magendie, dilatación del IV ventrículo, hipertensión endocraneana, ptosis, parálisis del IV par y papiledema …   Diccionario de oftalmología

  • François Magendie — Magendie im Jahr 1822 François Magendie (* 6. Oktober 1783 in Bordeaux; † 7. Oktober 1855 in Sannois (Val d’Oise) bei Paris) war ein französischer Mediziner, Anatom, Physiologe und gilt als einer der Vorreiter der modernen Arzneimi …   Deutsch Wikipedia