CLAUS LUNAU / SCIENCE PHOTO LIBRARY CLAUS LUNAU / SCIENCE PHOTO LIBRARY
Hypothalamus in the brain. Computer illustration of a human brain with most of the left hemisphere removed, showing the hypothalamus (pink). Front is at left. The hypothalamus is part of the limbic system. One of its most important functions is to link the nervous system with the endocrine (hormone) system via the pituitary gland. It is therefore responsible for the control of hormone levels within the body and as such plays an important role in certain metabolic processes and the autonomic nervous system, including: controlling body temperature, hunger, thirst, fatigue, sleep and circadian rhythms. It produces and secretes certain neurohormones.
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