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Gyri (gyrus): These are the raised, convex ridges on the surface of the cerebral cortex. They increase the surface area of the cortex, allowing for greater cognitive processing. Prominent gyri, like the precentral gyrus, are associated with specific functions, such as motor control.
A gyrus (plural: gyri) is a ridge on the surface of the brain. Each ridge is surrounded by fissures known as sulci (singular: sulcus). Gyri are unique structures that have an important evolutionary function; they increase the surface area of the brain up to an impressive 2000 centimeters squared.
a convoluted ridge between anatomical grooves; especially : convolution… See the full definition
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). [1] Gyri and sulci create the folded appearance of the brain in humans and other mammals.
Gyrification is the process of forming the characteristic folds of the cerebral cortex. [1] The peak of such a fold is called a gyrus (pl. gyri), and its trough is called a sulcus (pl. sulci). The neurons of the cerebral cortex reside in a thin layer of gray matter, only 2–4 mm thick, at the surface of the brain. [2]
Gyri (singular: gyrus) are the folds or bumps in the brain and sulci (singular: sulcus) are the indentations or grooves. Folding of the cerebral cortex creates gyri and sulci which separate brain regions and increase the brain's surface area and cognitive ability.
one of the many convolutions of the surface of the cerebral hemispheres caused by infolding of the cortex, separated by fissures or sulci; called also cerebral gyrus. angular gyrus one continuous anteriorly with the supramarginal gyrus.
The cerebral cortex (cortex of the brain) is the outer grey matter layer that completely covers the surface of the two cerebral hemispheres. It is about 2 to 4 mm thick and contains an aggregation of nerve cell bodies. This layer is thrown into complex folds, with elevations called gyri and grooves known as sulci.
The ridges between the sulci are known as a gyri (singular; gyrus). Major sulci and fissures divide each hemisphere into four lobes: the frontal, parietal, occipital, and temporal lobes. In the midregion of the lateral cortex is an elongated vertical groove called the central sulcus.
Definition. The raised areas or elevations found on the outer layer of the brain, known as the cerebral cortex, are called cerebral gyri. The cerebral cortex consists of gray matter and encompasses the white matter tracts and inner deep subcortical nuclei.