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Indiana University explains that gyri and sulci, which comprise the wrinkled surface of the brain, are an adaptation that allows the brain to have more surface area. This is important because the internal volume of an an... More »

According to a faculty member at the University of Washington, gyri and sulci arose as a way to pack more brain volume within the finite dimensions of the skull. The larger the surface area of the brain, the more neurons... More »

The folds in the brain are crevices called sulci and ridges called gyri, and several of them have specific names. Unfolding all the crevices and ridges would leave a human brain approximately the size of a pillowcase, ac... More »

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The folds in the brain are crevices called sulci and ridges called gyri, and several of them have specific names. Unfolding all the crevices and ridges would leave a human brain approximately the size of a pillowcase, ac... More »

The wrinkles in the brain increase the brain's surface area. By increasing the surface area of the brain, humans can increase the size of their brains and improve their ability to function at high levels. Humans have evo... More »

According to a faculty member at the University of Washington, gyri and sulci arose as a way to pack more brain volume within the finite dimensions of the skull. The larger the surface area of the brain, the more neurons... More »

Alveoli have a large surface area in order to rapidly exchange gases, which is the primary function of the lungs. There are approximately 300 million alveoli found inside the lungs. More »