The document provides information about the bones that make up the human skull. It states that the skull contains 22 bones total, with 8 cranial bones forming the cranial cavity to protect the brain, and 14 facial bones forming the framework of the face. It then proceeds to describe each individual bone, its location and function. It notes other bones in the skull like the auditory ossicles and hyoid bone. In closing, it mentions that sinuses are air-filled cavities located in certain skull bones that help reduce the weight of the skull.