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When two drugs act at different receptors or by different machanisms on the same physiological system and produce opposite effect

Functional antagonism i.e insulin and glucagon on blood sugar

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Try These Similar MCQs

  • A Bethanechol
  • B Butyrylcholine
  • C Methacholine
  • D Benzoylcholine
  • A Heparin & Protamine
  • B Protamine & Zinc
  • C Heparin & Prothrombin
  • D All the above
Explanation: Chemical antagonism does not involve any receptors. Protamine is a positively charged protein at physiological pH and thus antagonizes the effects of Heparin which is negatively charged at physiological pH.
  • A Neuromuscular junction
  • B Postganglionic parasympathetic
  • C Adrenal medulla
  • D Autonomic ganglia
  • A Sweat glands
  • B Ciliary muscle
  • C Iris muscles
  • D Splenic capsule
  • A Is more painful
  • B Produces faster response
  • C Is unsuitable for depot preparations
  • D Carries greater risk of anaphylactic reaction

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