medical MCQs – Page 452

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 Review each marked answer and report any item that may be outdated or unclear.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

9021. DOPA and 5-Hydroxytryptophan are clinically important because_____________?
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A. They act as neuromodulators

B. They cross blood Brain Barriers

C. They are acidic precursors of Brain amines

D. They are metabolites of various neurogenic amines

9022. All of the following statements about pain are correct except_____________?
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A. NSAIDS benefit by preventing prostaglandin synthesis

B. Analgesia is associated with ? and k receptors

C. Naloxane is a non-competitive antagonist and irreversibly opposes the opioids

D. Dysphoria is associated with S receptors

9023. Drug that does not cause sedation________________?
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A. Zopiclone

B. Diazepam

C. Buspirone

D. Nitrazepam

9024. The anti-inflammatory analgesic drug the causes least gastrointestinal symptoms is______________?
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A. Indomethacin

B. Phenyl butazone

C. Aspirin

D. Paracetamol

9025. All of the following decrease skeletal muscle tone by CNS effects except____________?
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A. Beclofen

B. Diazepam

C. Mephensin

D. D-tubocurarin

9026. Phenytoin is associated with_____________?
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A. Alzhiemers disease

B. Cushings syndrome

C. Vitamin C deficiency

D. Folic acid deficiency

9027. Phenothiazines are used to____________?
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A. Produce analgesia

B. Alter psychotic behaviour

C. Suppress coughing

D. Produce muscle relaxation

9028. Aspirine is useful in all the following conditions EXCEPT_____________?
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A. Gout

B. Fever

C. Post myocardial infarction

D. Venous thrombosis

9029. A paralyzing dose of succinylcholine initially elicits______________?
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A. Muscle fasciculation

B. CNS stimulation

C. CNS depression

D. Decreased salivation

9030. Drug which is used to control status epilepticus is______________?
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A. Pheno barbital

B. Diazepam

C. Sodium nitroprusside

D. Glyceryl trinitrite

9031. The beneficial effect of drug neostigmine in the treatment of Myasthenia gravis is due to the action____________?
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A. It produces more acetycholine receptors

B. It increases the action of cholinesterase

C. It is produces more acetylcholine

D. It inhibits the action of cholinesterase

9032. In which of the following stage general anesthesia surgery is done_______________?
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A. Stage III plane 3

B. Stage I

C. Stage II

D. Stage III plane 2

9033. Nitrates are not used in______________?
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A. Esophageal spasm

B. Cyanide poisoning

C. CCF

D. Renal colic

9034. Which of the following histamine blockers has no effect on muscarinic receptors______________?
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A. Terfenadine

B. Diphenydramine

C. Promethazine

D. Pyrilamine

9035. Drug efficacy refers to_________________?
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A. The therapeutic index of the drug

B. Range of disease in which the drug beneficial

C. The therapeutic does range of the drug

D. Maximal intensity of response that can be produced by the drug

9036. Which one of the following drugs has been shown to offer protection from gastric aspiration syndrome in a patient with symptoms of reflex ?
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A. Sodium citrate

B. Ondansetron

C. Metoclopramide

D. Atropine

9037. Elimination after 4 half lives in first order kinetics is____________?
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A. 93%

B. 84%

C. 80.50%

D. 4.75%

9038. Which of the following is true for carbonic anhydrase inhibitor ?
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A. It causes excertion of Na & Cl

B. It causes metabolic alkalosis

C. It is very potent

D. It is used as an adjunct in epilepsy

9039. A factor with a mucopoly saccaride, present in liver, presenting in platelet aggregation is______________?
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A. Prothrombin

B. Acetylsalicylic acid

C. Plasmin

D. Heparin

9040. The most common type of epilepsy in children is________________?
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A. Infantile spasm

B. Grand mal epilepsy

C. Petit mal

D. None of the above

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