The parietal bone is one of the two large bones that form the sides and roof of the skull. It is located between the frontal bone at the front and the occipital bone at the back. Each parietal bone is flat and roughly quadrilateral in shape, contributing to the overall structure and protection of the brain. In humans, there are two parietal bones, one on each side of the skull. They are connected to other bones through sutures, which are fibrous joints. The parietal bones play a crucial role in protecting the brain and supporting the structure of the head, making them essential for overall cranial integrity.