1. Iron absorption takes place in which part of intestineIleumDuodenumjejunumColonQuestion 1 of 20 2. baroreceptor are located inNoneTunica intimaTunica advantitaTunica mediaQuestion 2 of 20 3. Which of the following is most likely to relieve the symptoms caused by hyperventilation?Breathing in and out of a plastic bagBreathing 100% nitrogenIntravenous administration of bicarbonateBreathing a 10% oxygen/90% nitrogen mixtureQuestion 3 of 20 4. fetal hemoglobin has higher affinity for oxygen due tooxygendissociation curve is shifted to rightdecreased 2,3 DPG concentrationincreased release of carbondioxidereduced pHQuestion 4 of 20 5. Penile erection is mediated byParasympathetic system via muscarinic receptorssympathetic system via beta receptorsparasympathetic system via nicotinic receptorssympathetic system via alpha receptorsQuestion 5 of 20 6. Vitamin B-12 is absorbed inDuodenumIleumJejunumstomachQuestion 6 of 20 7. cyanosis does not occur in severe anemia becausecritical conc of Hb required to produce cyanosis is reducedoxygen carrying capacity of available Hb is increasedhypoxia stimulates erythropoietin productionoxygen hemoglobin curve shift to the rightQuestion 7 of 20 8. microvilli in the intestine helps to counteract viral infection byforming immunoglobulinsincrease in cell surface areaincreasing absorptionincrease th eno f receptorsQuestion 8 of 20 9. increase in threshold level on applying subthreshold slowly rising stimulus is calledrefractorinessaccommodationelectrotonusadaptationQuestion 9 of 20 10. which of the following does not have a corresponding releasing hormone from the hypothalamusFSHTSHACTHprolactinQuestion 10 of 20 11. Potential developed due to movement of freely diffusible ions across a semi permeable membrane is calculated usingNernst equationGoldman-Hodgkin-Katz equationGibbs equationFick principleQuestion 11 of 20 12. Mechanism of action of Ca2+ in smooth muscle contractionActivation of kinaseActivation of actininDephosphorylation of myosinActivation of troponinQuestion 12 of 20 13. Affinity of haemoglobin at normal pH is:More for carbonmonoxide than oxygenAffinity change with changing pHMore for carbon dioxide than oxygenEqual for carbonmonoxide and oxygenQuestion 13 of 20 14. Nonfunctioning of complement component C36 would be expected to interfere with which of the following biologic functions?Decreased appetiteIncreased collagen synthesis by fibroblastsFeverOpsonization to facilitate phagocytosisQuestion 14 of 20 15. Memory cell in immune system are long lived and escape apoptosis because ofNerve growth factorFibroblast growth factorPlatelet derived growth factorInsulin like growth factorQuestion 15 of 20 16. function of carotid body isregulate hemoglobin synthesissense O2 partial pressure in arterial bloodregulate tissue fluidsense o2 partial pressure in venous bloodQuestion 16 of 20 17. G protein coupled receptorNMDA receptorSteroidM2Insulin receptorsQuestion 17 of 20 18. Which of the following lung volumes or capacities cannot be measured directly using simple spirometry?Functional residual capacityInspiratory reserve volumeExpiratory reserve volumeTidal volumeQuestion 18 of 20 19. small airways has laminar air flow becausereynolds number more than 2000low cross sectional areavery small diameterextremely low velocityQuestion 19 of 20 20. Tubuloglomerular feedback is for regulation ofBlood volumeGFRBPSodium reabsorptionQuestion 20 of 20 Loading...