ALFRED PASIEKA / SCIENCE PHOTO LIBRARY ALFRED PASIEKA / SCIENCE PHOTO LIBRARY
Skull. Coloured X-ray of a healthy human skull seen from the side. The bones of the cranium (centre) are fused together to form a solid structure that encloses and protects the brain. The jaw (lower right) houses numerous teeth. The neck vertebrae (lower centre) support the head, and provide protection for the spinal cord (not seen) which connects the brain to the rest of the body.
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