Month: April 2018

Gastrointestinal Drugs MCQs

1. Histamine H2 blockers attenuate the gastric secretory response to acetylcholine and pentagastrin as well because: A. H2 blockers block gastric mucosal cholinergic and gastrin receptors as well B. H2 blockers inhibit the proton pump in gastric mucosa C. Acetylcholine and gastrin act partly by releasing histamine in gastric mucosa D. Histamine, acetylcholine and gastrin […]

Drugs Affecting Blood MCQs

  1. The percentage of elemental iron in hydrated ferrous sulfate is: A. 5% B. 10% C. 20% D. 33% ANSWER: [  C  ]   2. Select the oral iron preparation which does not impart metallic taste and has good oral tolerability despite high iron content but whose efficacy in treating iron deficiency anaemia has […]

Drugs Acting on Kidney MCQs

  1. Select the diuretic which is orally active, efficacious in acidosis as well as alkalosis, causes diuresis even in renal failure and has additional carbonic anhydrase inhibitory action: A. Mannitol B. Benzthiazide C. Indapamide D. Furosemide ANSWER: [   D  ]   2. Furosemide acts by inhibiting the following in the renal tubular cell: A. […]

Cardiovascular Drugs MCQs

  1. The following factors enhance renin release from the kidney except: A. Fall in blood pressure B. Reduction in blood volume C. Enhanced sympathetic activity D. Volume overload ANSWER: [   D  ]   2. Angiotensin II plays a key role in the following risk factor for ischaemic heart disease: A. Hypercholesterolemia B. Ventricular hypertrophy […]

Hormones and Related Drugs MCQs

1. Gonadotropins are indicated in the following conditions except A. Hypogonadotrophic hypogonadism in males B. Cryptorchism in a boy less than 7 years old C. Amenorrhoea and infertility in women D. Polycystic ovaries ANSWER:  [  d  ] 2. The hypothalamic gonadotropin releasing hormone (GnRH) is A. A single peptide B. A mixture of two distinct […]

PNS Drugs MCQs

1. Pancuronium differs from tubocurarine in that A. It is a depolarizing blocker B. Its action is not reversed by neostigmine C. It can cause rise in BP on rapid I.V. injection D. It causes marked histamine release ANSWER:  [  c  ] 2. Which of the following drugs undergoes ‘Hofmann’ elimination A. Succinylcholine B. Pancuronium […]

CNS Drugs MCQs

1. The minimal alveolar concentration of an inhalational anaesthetic is a measure of its: A. Potency B. Therapeutic index C. Diffusibility D. Oil: water partition coefficient ANSWER:  [  A  ]   2. The primary mechanism by which general anaesthetics produce their action is: A. Affecting receptor operated ion channels in cerebral neurones B. Blocking voltage […]

Drugs for Respiratory Disorders MCQs

1. Antitussives act by: A. Liquifying bronchial secretions B. Raising the threshold of cough centre C. Reducing cough inducing impulses from the lungs D. Both ‘B’ and ‘C’ are correct Answer: [  D  ]   2. Dextromethorphan is an: A. Analgesic B. Antitussive C. Expectorant D. Antihistaminic Answer: [  B  ]   3. Which of […]

Autocoids & Related Drugs MCQs

  1. Histamine exerts the following actions except: A. Dilatation of large blood vessels B. Dilatation of small blood vessels C. Stimulation of isolated guineapig heart D. Itching Answer: [   D  ]   2. Fall in blood pressure caused by larger doses of histamine is blocked by: A. H1 antihistaminics alone B. H2 antagonists alone […]

Autonomic Nervous System MCQs

  1. The major postjunctional cholinergic receptor is of the muscarinic type at the following site (a) Postganglionic parasympathetic (b) Adrenal medulla (c) Autonomic ganglia (d) Neuromuscular junction ANSWER:  [  a  ]   2. The following cotransmitter is most probably involved in mediating nonadrenergic noncholinergic (NANC) relaxation of the gut (a) Neuropeptide Y (b) Adenosine […]

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