The bone that protects the brain is the skull. The skull is a complex structure made up of several bones that encase and safeguard the brain, providing a protective barrier against injury. It also supports the structure of the face and houses the structures necessary for vision, hearing, and smell. The skull consists of two main parts: the cranium, which holds the brain, and the facial bones, which form the face. In addition to protection, the skull provides attachment points for muscles related to facial expression and chewing.