SCOTT CAMAZINE / SCIENCE PHOTO LIBRARY SCOTT CAMAZINE / SCIENCE PHOTO LIBRARY
Pituitary gland. Computer-enhanced magnetic resonance imaging (MRI) scan of a healthy human brain seen in side view, with the pituitary gland highlighted (magenta). At centre, positioned at eye- level below the cerebral folds of the brain, is the pea-sized pituitary gland. It is the master endocrine gland in the body. Pituitary hormones exert direct action on body organs (such as the kidney and mammary glands), as well as regulating hormone secretion of other endocrine glands of the body (such as the thyroid, ovary and testes). The pituitary gland is located close to the brain because its actions are controlled by the central nervous system.
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