A detailed illustration of the human skull, showcasing the composition of the cranium bones forming the skull. The skull consists of eight flat bones that come together to protect the brain. The adult skull is a frame structure composed of multiple bones. The style should be vibrant children's animation, with a focus on the intricacies of the skull structure, highlighting the protective function of the cranium bones. The illustration should emphasize the unity of the bones in forming the overall skull shape, with rich details and a three-dimensional effect to make it realistic and educational for young learners.