Cranial sutures are fibrous joints that connect the bones of the skull. They allow for slight movement during birth, helping the baby's head fit through the birth canal. As a person ages, these sutures gradually fuse, providing stability to the skull. There are several major cranial sutures, including the coronal suture, sagittal suture, and lambdoid suture. Each suture has a specific location and function, contributing to the overall shape and protection of the brain. Understanding cranial sutures is important in fields like anatomy and medicine.