Q.

Describe the role of hypothalamus as a neuroendocrine organ.

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Detailed Solution

  • The hypothalamus is located at the base of thalamus of the brain.
  • It is 'the master control centre' of the endocrine system as it controls pituitary gland.
  • It contains neurosecretory cells called Nuclei.
  • They secrete:
    a) Releasing hormones: Example: Growth hormone releasing hormone (GHRH) (or) somatocrinin
    b) Inhibiting hormones: Example: Growth hormone inhibiting hormone (GHIH) (or) somatostatin
  • Hypothalamus directly regulates posterior pituitary secretions.
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