The human skull is a bony structure that forms the head and protects the brain. It consists of 22 bones, which are divided into two main parts: the cranium, which encases the brain, and the facial bones, which shape the face. These bones are connected by joints called sutures, allowing for slight movement during growth. In addition to protection, the skull provides attachment points for muscles involved in chewing and facial expressions. It also houses the sinuses, which help to lighten the skull's weight and improve voice resonance. Overall, the human skull plays a crucial role in both protection and function.