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The Hypothalamus is the control center of all autonomic regulatory activities of the body. It has been said that the hypothalamus is the brain of the brain.  It is the hub for  automatic and endocrine homeostatic systems such as cardiovascular, temperature, and abdominal visceral regulation. It manages all endocrine hormonal levels, sensory processing, and organizing body metabolism, as well as ingestive behaviors. It appears that almost everything the Hypothalamus does is related in some way to the management of brain and body connection, linking the psyche (mind) to the body.

The hypothalamus is an integral part of the substance of the brain. A small cone-shaped structure, it projects downward, ending in the pituitary (infundibular) stalk, a tubular connection to the pituitary gland. The round bony cavity containing the pituitary gland is called the sella turcica. The posterior portion of the hypothalamus, called the median eminence, contains many neurosecretory cells. Important adjacent structures include the mammillary bodies, the third ventricle, and the optic chiasm, the last being of particular concern to physicians because pressure from expanding tumours or inflammations in the hypothalamus or pituitary gland may result in severe visual defects or total blindness. Above the hypothalamus is the thalamus. (For discussion of the function of these surrounding structures, see the nervous system.)
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