The sutura sagittalis is a fibrous joint located on the top of the skull, running from the front to the back. It connects the two parietal bones, which are part of the cranial structure. This suture plays a crucial role in the growth and development of the skull during childhood, allowing for the expansion of the brain. As a type of suture, the sutura sagittalis is one of several that make up the human skull. Other important sutures include the sutura coronal and sutura lambdoidea, which help to form the protective casing around the brain and support its structure.