The skull is composed of which bones?

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The skull is made up of two groups of bones: the cranial bones that protect the brain and the facial bones that shape the face. In an adult, there are eight cranial bones and fourteen facial bones, totaling twenty-two bones that form the skull. The jaw, or mandible, is one of the facial bones, while the spine is not part of the skull. Counting the jaw and spine would include bones outside the skull, which is why that option isn’t correct. The skull’s proper composition is eight cranial plus fourteen facial bones, giving twenty-two bones in total.