The layout and the size of gyri vary from person to person, although there are certain types of gyri which are found in everyone. Ultimately, cognitive functions will be better with gyri without having to increase the actual brain size, which would not fit into a skull. A larger surface area means that more neurons can be packed into the cortex so that it can process more information. They are unique structures that are important as they increase the surface area of the brain. Gyri are found on the surface of the cerebral cortex and are made up of grey matter, consisting of nerve cell bodies and dendrites. A gyrus (plural: gyri) is the name given to the bumps ridges on the cerebral cortex (the outermost layer of the brain). The brain has an overall wrinkled appearance, consisting of many ridges and indentations. These gyri and sulci form important landmarks that allow us to separate the brain Pattern of folds or bumps, known as gyri (singular: gyrus), and grooves, known as sulci (singular: sulcus). The surface of the brain, known as the cerebral cortex, is very uneven, characterized by a distinctive By Olivia Guy-Evans, published June 09, 2021
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