Fornicate gyrus

Fornicate gyrus

The fornicate gyrus is a gyrus of the cerebral cortex, located on the medial surface adjacent to the corpus callosum. It is named for the fornix, a tract of white matter that runs beneath its surface roughly in a loop, from the amygdala to the mamillary bodies. It consists of the cingulate gyrus and the parahippocampal gyrus.

Because the central sulcus that separates the frontal lobe from the parietal lobe stops when it reaches the cingulate gyrus, and because the fornicate gyrus is functionally distinct from adjacent areas of the frontal and parietal lobes, the fornicate gyrus is sometimes regarded as a separate lobe of the brain; as such it called the limbic lobe because it is part of the limbic system. However, the limbic association cortex extends beyond this gyrus, and the term "limbic lobe" is no longer considered meaningful.Fact|date=April 2008

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  • fornicate gyrus — noun A horseshoe shaped section of the cerebral cortex, comprising the cingulate gyrus and the parahippocampal gyrus. Syn: limbic lobe, gyrus fornicatus …   Wiktionary

  • Gyrus — A gyrus (pl. gyri ) is a ridge on the cerebral cortex. It is generally surrounded by one or more sulci.Notable gyri* Fornicate gyrus * Superior frontal gyrus, lat . gyrus frontalis superior * Middle frontal gyrus, lat . gyrus frontalis medius *… …   Wikipedia

  • gyrus — One of the prominent rounded elevations that form the cerebral hemispheres, each consisting of an exposed superficial portion and a portion hidden from view in the wall and floor of the sulcus. [L. fr. G. gyros, circle] angular g. [TA] a folded… …   Medical dictionary

  • cingulate gyrus — noun A section of the cerebral cortex, belonging to the fornicate gyrus, which arches over the corpus callosum. Syn: callosal gyrus …   Wiktionary

  • parahippocampal gyrus — noun A section of the cerebral cortex that surrounds the hippocampus and which is the lower part of the fornicate gyrus …   Wiktionary

  • Sulcus — From the Latin for a groove, furrow, or trench. In medicine, there are many sulci (plural of sulcus) as, for example, the superior pulmonary sulcus. * * * 1. [TA] One of the grooves or furrows on the surface of the brain, bounding the several… …   Medical dictionary

  • lobe — 1. One of the subdivisions of an organ or other part, bounded by fissures, sulci, connective tissue septa, or other structural demarcations. 2. A rounded projecting part, as the l. of the ear. SEE ALSO: lobule. 3. One of the larger divisions of… …   Medical dictionary

  • Limbic system — Infobox Brain Name = Limbic system Latin = GraySubject = GrayPage = Caption = The limbic system within the brain. Width = 200px Caption2 = IsPartOf = Components = Artery = Vein = BrainInfoType = ancil BrainInfoNumber = 247 MeshName = MeshNumber …   Wikipedia

  • limbic system — noun Part of the human brain involved in emotion, motivation, and emotional association with memory; includes amygdala, cingulate gyrus, fornicate gyrus, hippocampus, hypothalamus, mammillary body, nucleus accumbens, orbitofrontal cortex and… …   Wiktionary

  • transisthmian — Across any isthmus; specifically, across the isthmus of the fornicate gyrus, denoting the gyrus transitivus. * * * trans·isth·mi·an (trans isґme ən) across an isthmus, especially the isthmus of the gyrus fornicatus …   Medical dictionary

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