D. ROBERTS / SCIENCE PHOTO LIBRARY D. ROBERTS / SCIENCE PHOTO LIBRARY
Child's skull. Coloured X-ray of a sagittal section through a child's skull. The cranium (centre) houses and protects the brain. The eye sockets and nasal cavity (centre left) are surrounded by the bones and spaces of the paranasal sinuses. The nasal, cheek and upper jaw bones are fused to the cranium to form the facial skeleton, while the lower jaw bone (mandible, lower left), is attached at flexible joints, allowing it to move.
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