MCQ Book Questions

Q55374. A patient is admitted to the emergency room with orthostatic hypotension and evidence of marked GI bleeding. Which of the following most accurately describes the probable autonomic response to this bleeding? DRUGS ACTING ON AUTONOMOUS NERVOUS SYSTEM 91

Q55375. Drugs that block the α receptor on effector cells at adrenergic nerve endings

Q55376. Yohimbine is an antagonist of ______ receptors.

Q55377. Which of the following organs is innervated only by parasympathetic nerves ?

Q55378. Muscarinic cholinergic receptors

Q55379. The cardiac muscarinic receptors

Q55380. Atropine does not exert relaxant/ antis- pasmodic effect on the following muscle

Q55381. α1 – receptors are coupled with _______ G protein.

Q55382. Hyoscine differs from atropine in that it

Q55383. Which of the following anticholinergic drugs is primarily used in preanaesthetic medication and during surgery

Q55384. Glycopyrrolate is the preferred antimus- cannic drug for use before and during surgery because

Q55385. Which of the following mydriatics has the fastest and briefest action ?

Q55386. The most suitable mydratic for a patient of corneal ulcer is

Q55387. The most effective antidote for belladon- na poisoning is

Q55388. Atropine is contraindicated in

Q55389. Select the correct statement from the following about α1 – adrenergic receptor agonists

Q55390. The most efficacious inhibitor of cate- cholamine synthesis in the body is

Q55391. Tyramine induces release of noradrenaline from adrenergic nerve endings

Q55392. Choose the correct statement from the following about α1 – adrenergic receptor agonists

Q55393. A sympathomimetic amine that acts almost exclusively by releasing noradrenaline from the nerve endings is