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The infundibular region forms an important part of the hypothalamic periventricular grey substance. By morpho-physiological examinations its nuclei were affirmed to be generally significant as high-leveled centres for the regulation of various vegetative functions: heart frequency, blood pressure, intestine motility, feeling of hunger, satiety and thirst, and homeostasis of temperature. Moreover, emotional and sexual reactions as well as the regulation of behaviour depend on the hypothalamic nuclei. Most frequently, researchers dealt with the role of the neurosecretory supraoptic, paraventricular and infundibular nuclei for water and salt household and for the control of endocrine glands.