1. In body plethysmography,a person is asked to expire against a closed glottis. What will be the change in the pressure in the lung and the boxIncrease in bothDecrease in lung, increase in boxDecrease in bothIncrease in lung, decrease in boxQuestion 1 of 20 2. Iron is absorbed fromstomachDuodenumIleumJejunumQuestion 2 of 20 3. which of the following enzyme is stable at acidic pHpepsintrypsinchymotripsincarboxypeptidaseQuestion 3 of 20 4. Intercalated discs are present innoneCardiac myocytesSkeletal muscle cellSmooth muscle cellQuestion 4 of 20 5. which of the following is least correctduring exercise systole is shortened more than diastolenoradrenaline increases force of contractionvagal stimulation decreases rate of contractiondenervated heart has more heart rateQuestion 5 of 20 6. True about bezold-jarish reflexTachycardiaHypertensionHyperpneaHypotensionQuestion 6 of 20 7. Type 1 muscle fibres areGlycolyticlargeAnerobicRedQuestion 7 of 20 8. If diameter of a vessel is doubledBlood flow increases four foldBlood flow decreases four foldBlood flow increases sixteen foldBlood flow decreases sixteen foldQuestion 8 of 20 9. Negative intrapleural pressure is due toPresence of cartilage in upper airwayUniform disribution of surfactant over alveoliLymphatic drainage of pleuraNegative intraalveolar pressureQuestion 9 of 20 10. Antimullerian hormone is secreted bynoneLeydig cellsSertoli cellsGranulosa cellsQuestion 10 of 20 11. which of the following are incorrectly pairedF cells: gastrinD cells:somatostatinA cells:glucagonB cells:insulinQuestion 11 of 20 12. Calcium is pumped back into sarcoplasmic reticulum byRinotidine receptorSERCANoneSodium pumpQuestion 12 of 20 13. Use of pulse oximeter measuresCO2 concentration in bloodpH of bloodCO saturation in bloodO2 saturation in bloodQuestion 13 of 20 14. Secretin is produced by:PancreasSmall intestineLiverStomachQuestion 14 of 20 15. A 3-year-old child has inhaled a peanut that has lodged in the right mainstem bronchus, largely occluding it. The child is cyanotic, with a PO2 of 60 mm Hg. Which of the following mechanisms best accounts for the child's hypoxemia?Hypoventilation of central originInequalities of ventilation and perfusionDecreased PO2 in inspired airDecreased capacity of pulmonary diffusionQuestion 15 of 20 16. Inhibition of heart by vagus is mediated by which receptorsNmM1NnM2Question 16 of 20 17. Which hormone does not increase in burnsCortisolEpinephrineGlucagonLHQuestion 17 of 20 18. Acrosome reaction is seen inOogenesisFertilisationSpermatogenesismenstruationQuestion 18 of 20 19. In which segment of the systemic circulation does the greatest decrease in blood pressure occur?Aorta and large arteriesCapillariesArteriolesSmall arteriesQuestion 19 of 20 20. Countercurrent mechanism in the kidney is responsible forSecretion of uric acidAbsorption of glucoseOsmotic gradient in medullaMaintenance of blood flowQuestion 20 of 20 Loading...