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What (who) is Gyrus - definition
OUTWARD FOLD ON THE BRAIN SURFACE
Gyri; Gyral; Gyri (neuroanatomy); Gyrus (neuroanatomy); Cerebral gyri; Gyrencephalic
![Gray's]] FIG. 726 – Lateral surface of left [[cerebral hemisphere]], viewed from the side](https://commons.wikimedia.org/wiki/Special:FilePath/Gray726.png?width=200 "Gray's]] FIG. 726 – Lateral surface of left [[cerebral hemisphere]], viewed from the side")
![Gray's]] Fig. 727 – Medial surface of left cerebral hemisphere](https://commons.wikimedia.org/wiki/Special:FilePath/Gray727.svg?width=200 "Gray's]] Fig. 727 – Medial surface of left cerebral hemisphere")
gyrus
['d???r?s]
¦ noun (plural gyri -r??) Anatomy a ridge or fold on the cerebral surface of the brain.
Origin
C19: from L., from Gk guros 'a ring'.
Gyrus
·noun A convoluted ridge between grooves; a convolution; as, the gyri of the brain; the gyri of brain coral. ·see Brain.
Gyral
·adj Pertaining to a gyrus, or convolution.
II. Gyral ·adj Moving in a circular path or way; whirling; gyratory.
Wikipedia
Gyrus
In neuroanatomy, a gyrus (pl. gyri) is a ridge on the cerebral cortex. It is generally surrounded by one or more sulci (depressions or furrows; sg. sulcus). Gyri and sulci create the folded appearance of the brain in humans and other mammals.
Examples of use of Gyrus
1. Everything else was going like the clappers, but my superfrontal gyrus was inhibited!
2. If she thought about walking around her flat, they expected to see a brain region called the parahippocampal gyrus, which handles mental maps of places, light up.
3. Gyrus is to raise ÂЈ116m net of expenses through a placing of new shares with institutional investors and it has secured a new $250m debt facility.
4. Apparently the superfrontal gyrus – the brain region associated with self–awareness – is inhibited when one is absorbed in sex, sudoku or entering slip roads to the M6.
5. June 16 2005 11÷17 Gyrus of the UK is to buy American Cystoscope Makers, a US medical devices rival, in a $4'7m (ÂЈ275m) deal as it looks to expand in the world‘s largest healthcare market.