Pituitary Hormones and their Control by the Hypothalamus


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Lecture´s Description

In this video lecture, educator describes Pituitary Hormones and their Control by the Hypothalamus starting with the initial introduction of Pituitary Gland which is an endocrine gland about the size of a pea weighing 0.5 gm. Parts of Pituitary Gland are Anterior pituitary, and the posterior pituitary. Posterior pituitary secretion is controlled by nerve signals originating in hypothalamus and terminate in the posterior pituitary and Anterior pituitary secretion is controlled by hypothalamic releasing and hypothalamic inhibitory hormones. There is a System of blood vessels that link hypothalamus and anterior pituitary. The diagram explains the Hypophyseal portal system. The next slides explain the Pituitary and Relation to Hypothalamus.

Physiological Functions of Growth Hormone are on protein metabolism, On fat metabolism, On cartilage and bone, On soft tissues, On growth and on carbohydrate metabolism. The part of the hypothalamus that causes secretion of GHRH is the ventromedial nucleus. Most of the control is mediated through GHRH. Panhypopituitarism, Dwarfism, Adult Panhypopituitarism, Gigantism and Acromegaly are the Abnormalities of growth hormones. Then the educator explains the Posterior Pituitary Gland and Functions of Oxytocin and Functions of ADH/Vasopressin, Regulation of oxytocin and Regulation of ADH.

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