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 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.

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foramen of Ma·gen·die -mə-.zhän-'dē n a passage through the midline of the roof of the fourth ventricle of the brain that gives passage to the cerebrospinal fluid from the ventricles to the subarachnoid space F. Magendie see BELL-MAGENDIE LAW

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apertura mediana ventriculi quarti.

Medical dictionary. 2011.

Look at other dictionaries:

  • 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, 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… …   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, 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

  • 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

  • François Magendie — in 1822 Born 6 October 1783 …   Wikipedia

  • List of anatomical topics — This page aims to list articles related to anatomy. This list is not necessarily complete or up to date if you see an article that should be here but isn t (or one that shouldn t be here but is), please update the page accordingly. NOTOC A… …   Wikipedia

  • List of human anatomical parts named after people — This is a list of human anatomical parts named after people. :For other lists of eponyms (names derived from people) see eponym.:For a list of eponyms sorted by name see List of eponyms.Alphabetical listFor clarity, entries are listed by the name …   Wikipedia

  • List of eponyms (L-Z) — An eponym is a person (real or fictitious) whose name has become identified with a particular object or activity. NOTOC Here is a list of eponyms:A–K L M N–O P Q–R S T U–V W X–ZL* Rudolf Laban choreographer, created labanotation. * Ferruccio… …   Wikipedia

  • foramina of key and retzius — ˌkāənˈretsēəs Usage: usually capitalized K&R Etymology: after Ernst A. H. Key died 1901 and Gustaf M. Retzius died 1919 Swedish anatomists : passages at the lateral recesses of the fourth ventricle of the brain see foramen of magendie …   Useful english dictionary

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