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SOVEREIGN, ISM / SCIENCE PHOTO LIBRARY SOVEREIGN, ISM / SCIENCE PHOTO LIBRARY
Head, brain and pituitary gland. Coloured sagittal magnetic resonance imaging (MRI) scan of the head and brain of a 35-year-old woman, showing the location of the pituitary gland (yellow, centre). The site of the pituitary gland is known as the sella turcica. It is a region within the skull just behind the eyes. It consists of the part of the sphenoid bone, and partially encloses the endocrine system's pituitary gland (hypophysis), a key gland that regulates many metabolic processes. The brain is enclosed in membranes, the skull and several layers of body tissues. The brain's cerebrum surrounds the midbrain structures (upper centre), with the cerebellum at centre right. The brainstem (centre) becomes the spinal cord in the neck. The tongue, nasal cavity, mouth, and other facial structures and organs are at left. This is a T2-weighted MRI scan.
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