pharmacology Mcqs
551. The intramuscular administration of 0.6 mg of atropine sulphate to a 50 kg adult may produce all of the following effects except_____________?
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A. Bradycardia

B. Decreased Sweating

C. Mydriasis

D. Decreased Salivation

552. The therapeutic advantage that pencillin V has over pencillin G is____________?
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A. Greater resistance to pencillinase

B. More reliable oral obsorption

C. Broader antibacterial spectrum

D. Slower renal excretion

553. Which of the following penicillins is given by oral route ?
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A. Benzathine penicillin

B. Procaine pencillin

C. Penicillin V / Phenoxymethyl penicillin

D. Benzyl penicillin

554. True about aminoglycoside is all except______________?
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A. Excreted unchanged in urine

B. Teratogenic

C. Are bacteriostatic

D. Distributed only extracellularly

555. Which of the following is beta-lactam antibiotic ?
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A. Carbamide

B. Sulphonamide

C. Ofloxacin

D. Cephalosporins
556. Short-acting non-depolarising muscle relaxant is________________?
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A. Succinylcholine

B. Decamethonium

C. Pancuronium

D. Mivacurum
557. Which drug can be safely used in lactating mothers ?
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A. Ampicillin

B. Erythromycin

C. Ciprofloxacin

D. Chloramphenicol

558. Succinylcholine prevents bronchospasm by______________?
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A. Centrally acting muscle relaxation

B. Dual action

C. Direct muscle relaxation

D. Depolarising block
559. Indirect sympathomimetics can_______________?
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A. Penetrate the blood brain barrier

B. Cause euphoria

C. Both of the above

D. None of the above

560. All are true about nitric oxide, EXCEPT____________?
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A. Present in cigarette smoke

B. Acts via cAMP

C. Regulates vasomotor tone

D. It is important in penile erection

561. Drug to be avoided in a patient allergic to penicillin is_____________?
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A. Sulphonamide

B. Ampicillin

C. Tetracycline

D. Cholarmphenicol

562. Mechanism of action of nifidipine is_____________?
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A. It has a prominent smooth muscle relaxant action causes arteolar dilation leading to fall in blood pressure

B. Decreased cardiac output thus decreasing load on myocardium

C. Nifidipine depresses the SA node thus decreasing mycocoardial excitability

D. Mainly depression of A-V conduction

563. Which of the following antibiotics is not used in the treatment of infectious mononucleosis ?
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A. Ampicillin

B. Gentamycin

C. Erythromycin

D. Ciprofloxacin

564. Heparin, apart from releasing lypoprotein lipase in the blood exerts its anti-coagulant action by____________?
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A. Inhibiting thrombin synthesis

B. Inhibiting prothrombin synthesis

C. Inhibiting fibrinogen synthesis

D. Binding to calcium