medical MCQs – Page 470

Practise multiple-choice questions from medical for competitive examinations and subject revision. Review each marked answer and report any item that may be outdated or unclear.

medical Mcqs

1. oral anatomy 2. microbiology 3. oral pathology and medicine 4. physiology 5. biochemistry 6. general anatomy 7. dental materials 8. pharmacology 9. pathology 10. oral histology

9381. Role of Heparin_____________?
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A. Prevents synthesis of prothrombin

B. Prevents synthesis of fibrinogen

C. Prevents prothrombin conversion to thrombin

D. Prevents conversion of fibrinogen to fibrin

9382. Which of the following drugs is not hypoglycemic?
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A. Gluengon

B. Glibenclamide

C. Tolbutamide

D. Ethosuxinide

9383. The highest risk associated with use of oral contraceptives in________________?
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A. Permanent sterility

B. Thromboembolic disorders

C. Cancer of breast

D. Hepatic necrosis

9384. Which of the following receptors is activated by acetylcholine and blocked by atropine______________?
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A. Nicotinic

B. Beta 1 and 2

C. Alpha 1 and 2

D. Muscarinic

9385. All except one are centrally acting muscle blocks___________?
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A. Diazepam

B. Dantrolene sodium

C. Meprobamate

D. Baclofen

9386. Which among the drugs given below, does Not act by protease inhibition ?
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A. Saquinavir

B. Ritonavir

C. Zanamivir

D. Nelfinavir

9387. The drug of choice for treatment of tyhoid is____________?
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A. Metronidazole

B. Ciprofloxacin

C. Tetracycline

D. Cefotaxim

9388. All of the following drugs are components of the MOPP cancer Chemotherapy regimen EXCEPT______________?
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A. Procarbazine

B. Methotrexate

C. Vincristine

D. Mechlorethamine

9389. Oral contraceptive failure occurs in a patient on Rifampicin because of____________?
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A. Rifampicin induce the metabolism of contra ceptive

B. Rifampicin antagonize the action of oral contraceptive

C. Rifampicin simulates gonadotropin relase from pituitary

D. Rifampicin decrease the secretion of progestin

9390. The bacterial resistance to tetracycline is due to___________?
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A. Decreased uptake of drug by bacteria

B. Alteration of dehydrofolate reductase

C. Inactivation of drug by enzymes

D. Alteration of drug binding sites

9391. Which of the following drugs in likely to damage the eighth cranial nerve when administered for a long period of time ?
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A. Streptomycin

B. Ethambutol

C. Isoniazid

D. Rifampicin

9392. Morphine withdrawal is characterized by all EXCEPT_____________?
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A. Yawning

B. Diarrhoea

C. Lacrimation

D. Miosis

9393. First line of antitubercular drug is_____________?
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A. Ethambutol

B. INH

C. Streptomycin

D. Cephalosporins

9394. All of the following are features of streptomycin drug except______________?
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A. It is an antitubercular drug

B. Effective against g-ve organisms

C. It can be given orally

D. None of the above

9395. Agent used in oral thrush_____________?
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A. Miconazole

B. Amoxycillin

C. Clobetasol

D. Clotrimazole

9396. Scopolamine helps in________________?
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A. A & C

B. Decreased secretions

C. Motion sickness

D. Hypertension

9397. Which of the following is not a broad spectrum antibiotic ?
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A. Tetracycline

B. Chloramphenicol

C. Cephalosporins

D. Doxycyclin

9398. Morphine is a_____________?
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A. Sedative

B. Alkaloid

C. Diuretic

D. Anti hypertensive

E. Both A & B

9399. Excessive bleeding due to heparin overdose is controlled by______________?
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A. Factor VIII

B. Vitamin K

C. Protamine sultate

D. EADA

9400. Which of the following antihypertensive agents in most likely to cause an exaggerated response to an injected catecholamine_____________?
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A. Hydralazine

B. Gauanethidine

C. A thiazide diuretic

D. Propranolol

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