SPRINGER MEDIZIN / SCIENCE PHOTO LIBRARY SPRINGER MEDIZIN / SCIENCE PHOTO LIBRARY
Brain anatomy, computer artwork. The right cerebral hemisphere is covered by the dura mater (white), one of the three meninges (membranes) that covers and protects the brain and spinal cord. At centre is the pituitary gland (small, spherical), which secretes hormones. Either side of it are the optic nerves (yellow), with the olfactory nerves (yellow) above it. Beneath the pituitary gland is the brainstem, which controls automatic functions, sleep and arousal and relays messages from the brain to the spinal cord. At centre right is the putamen (oval), which regulates movements and influences learning. The spinal cord (yellow) is at bottom.
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