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 it can hold. Therefore, many highly intelligent animals have evolved wrinkled brain surfaces that increase the relative surface-to-volume ratio.Know More
The gyri and sulci are composed of grey matter, one of the primary types of brain tissue. The University of Washington explains that the fissures or crevices are called sulci. The bumps or raised areas between the sulci are called gyri. Each person has a unique combination and pattern of sulci and gyri. Because of these wrinkles, the human brain has approximately 324 inches of surface area, which is about the same amount of surface area of a piece of large newspaper.
The University of Washington contends that the gyri and sulci help to divide the cerebrum into four basic lobes, or sections. The occipital lobe is located at the rear of the brain, while the frontal lobe is located at the front of the brain. The temporal lobes occur along the sides of the brain, while the parietal lobes are located along the top of the brain.Learn more about Human Anatomy
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.Full Answer >
The brain is located in the top part of the head called the skull. The skull, which is made up of 28 bones, serves the sole purpose of protecting the brain from injury and trauma.Full Answer >
According to Dartmouth's online textbook, "Basic Human Anatomy," the superior orbital fissure is a cleft in the bones of the skull located within the hollows (or orbits) of the eye. Several important nerves pass through this cleft. It is larger and higher than the inferior orbital fissure.Full Answer >
According to Medline Plus, suture joints are also known as cranial sutures and are comprised of bands of fibrous tissue that connect the bones of the skull. Cranial sutures are necessary for brain growth and development.Full Answer >