SCOTT CAMAZINE / SCIENCE PHOTO LIBRARY SCOTT CAMAZINE / SCIENCE PHOTO LIBRARY
Healthy brain. Computer enhanced image of a human brain, seen in side view. The brain is divided into three major regions: brainstem, cerebellum, and cerebrum. The brainstem (narrow, at bottom centre) is a stalk of nerve tissue which links the brain to the spinal cord. The cerebellum is a round area located to the right of the brainstem; it is concerned with the maintenance of posture and balance and with the coordination of movement. The cerebrum occupies the rest of the frame. It consists of an outer layer (grey matter) and an inner one (white matter). Deep in the forebrain (centre) are various structures which include the thalamus, hypothalamus and pituitary gland.
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