Thursday, April 2, 2009

192 - UPSC 2007 medical entrance mcqs with answers part 2

6. The features of organophosphorus poisoning include the following except

(a) Fasciculations
(b) Pulmonary oedema
(c) Epileptic seizures
(d) Mydriasis

7. The salicylate intoxication in adults usually causes the following except

(a) Severe respiratory alkalosis
(b) Mixed metabolic acidosis-respiratory alkalosis
(c) Pure high anion gap metabolic acidosis
(d) Hyperchloremic metabolic acidosis

8. The Schilling test is performed to determine the cause of

(a) Lactose malabsorption
(b) Fatty acid malabsorption
(c) Amino acid malabsorption
(d) Cobalamin malabsorption

9. J-receptors. which are responsible for rapid shallow breathing are located in

(a) Thoracic cage and lung
(b) Carotid artery
(c) Alveolo-capillary junction
(d) Respiratory muscles

J-receptors (juxtacapillary) are nerves innervating into the body of the lung. J-receptors respond to events such as pulmonary edema , pulmonary emboli, pneumonia, and barotrauma, which cause a decrease in oxygenation and thus lead to an increase in ventilation/respiration.The stimulation of the J-receptors causes a reflex increase in breathing rate, and is also thought to be involved in the sensation of dyspnea, the subjective sensation of difficulty breathing.

10. Pansystolic murmur at apex with soft first heart sound is the key sign of which one of the following?

(a) Aortic regurgitation
(b) Mitral regurgitation
(c) Ventricular septal defect
(d) Atrial septal defect

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