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 » Science Human Anatomy

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 » Science Human Anatomy Organs

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 » Science Human Anatomy Organs
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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 » Science Human Anatomy Organs

The lateral sulcus is the most prominent and deepest part of the cortical sulci, according to The Free Dictionary. The lateral sulcus extends from an anterior perforated type of substance. More » Science Human Anatomy

Duke Magazine notes that the bones in the skull continue to grow as people age. The forehead tends to move forward while the cheekbones move slightly backwards, causing subtle changes to the human face. Because the facia... More » Science Human Anatomy

The skull is composed of distinct bony plates that come together at joints called sutures that allow little or no movement, especially in adults. The joints between teeth and their sockets, called gomphoses, also allow v... More » Science Human Anatomy