Answer:

HYPOTHALAMUS :

• Hypothalamus is also called as the 'control centre' or 'supreme commander' of ENDOCRINE regulation.
• It is basal part of DIENCEPHALON, fore brain. It contains several neurosecretory CELLS called nuclei which produces hormones. The hormones regulate the synthesis and the secretion of pituitary hormones of pituitary gland.
• The two types of pituitary hormones PRODUCED are : Releasing hormones and Inhibiting hormones.
• Releasing hormones stimulates secretion of pituitary hormones

1. GnRH (Gonadotropin Releasing Hormone) stimulates anterior lobe of pituitary gland to release two gonadotrophins called the FSH (Follicle Stimulating Hormone) and LH (Luteinising Hormone).
2. ARH (Adrenocorticotrophic Releasing Hormone) stimulates anterior lobe of pituitary to release ACTH (Adrenocorticotrophic Hormone).
3. TRH (Thyrotrophin Releasing Hormone) stimulates the anterior lobe of pituitary to release TSH (Thyroid Stimulating Hormone).
4. GHRH (Growth Hormone Releasing Hormone) stimulates to release Growth Hormone (GH).
5. PRH (Prolactin Releasing Hormone) stimulates to release PRL (Prolactin).
6. MSHRH (Melanocyte Stimulating Hormone Releasing Hormone) stimulates the intermediate lobe to release MSH (Melanocyte Stimulating Hormone).

• Inhibiting hormones stimulates secretion of different hormones in the body

1. SS (Somatostatin) also called GHIH (Growth Hormone Inhibiting Hormone) inhibits the release of growth hormone from pituitary.
2. Prolactin Inhibiting Hormone (PIH) inhibits release of prolactin from anterior lobe of pituitary.
3. MSHIH (Melanocyte Stimulating Hormone Inhibiting Hormone) inhibits the release of Melanocyte Stimulating Hormone from intermediate lobe of pituitary.