Friday, December 25, 2009

CLASSIFICATION OF HORMONE BY GENERAL MECHANISM ACTION

1. Hormones that bind to intracellular receptors.


2. Hormones that bind to cell surface receptors

a) Second messenger is c AMP
Eg. ACTH, ADH, PTH

b) Second messenger is c GMP Eg. ANP,NO

c) Second messenger is calcium or phosphoinocitol or both Eg.Ach, α ADRENERGIC,TRH

d) Second messenger is a kinase or phosphatase cascade Eg. GROWTH FACTORS,INSULIN

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