BSIP, SEEMME / SCIENCE PHOTO LIBRARY BSIP, SEEMME / SCIENCE PHOTO LIBRARY
Brain scan. Coloured three-dimensional computed tomography (CT) scan of a brain (pink) inside a head. The surfaces of the cerebral hemispheres are seen beneath the skin, and one is sectioned to reveal its inner tissues. The cerebrum is the largest part of the brain, and controls conscious thoughts and actions. Its two hemispheres have different roles, for instance the left hemisphere controls language skills in most people.
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