There are eight bones that make up the skull: the frontal, two parietal, two temporal, occipital, sphenoid, and ethmoid bones. The frontal bone forms the forehead and eye sockets. The parietal bones are on either side behind the frontal bone. The temporal bones are under the parietal bones. The occipital bone forms the back of the skull. The sphenoid bone spans the width at the base. The ethmoid bone forms part of the nasal cavity. There are 12 pairs of cranial nerves that control functions like smell, vision, eye and facial movement, hearing, balance, taste, swallowing, digestion and more. The brain weighs about 3 pounds, is