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The "squiggly" appearance of the brain refers to the sulci and gyri the comprise the cerebral cortex. The sulci are the valleys, or sunken portions, and the gyri are the raised portions. The "squiggly" convolutions of the cerebrum (brain) allow for more surface area. Thus, the contours of the brain help increase the overall volume of the brain inside its limited space, the cranium. The "squiggly" appearance of the brain refers to the sulci and gyri the comprise the cerebral cortex. The sulci are the valleys, or sunken portions, and the gyri are the raised portions. The "squiggly" convolutions of the cerebrum (brain) allow for more surface area. Thus, the contours of the brain help increase the overall volume of the brain inside its limited space, the cranium. It is also 90% water.

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17y ago

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