1. Most important factor in transport across a membrane Size of particle membrane thickness Concentration gradient Charge of particle 2. Conversion of angiotensin-I to angiotensin-II occurs in kidneys RBCs Lung Liver 3. Pulmonary function abnormalities in interstitial lung diseases include all of the following except Reduced FEV1/FVC ratio Reduced diffusion capacity Reduced vital capacity Reduced total lung capacity 4. Which of the following membrane has the highest protein content per gram tissue Inner mitochondrial membrane Myelin sheath Plasma membrane Outer mitochondrial membrane 5. carotid body regulates regulates tissue fluids pO2 in venous blood regulates hemoglobin synthesis pO2 in arterial blood 6. Which of the following indices would be expected to be higher in an individual living at sea level versus an individual living in the mountains? Renal bicarbonate (HCO3-) excretion Diameter of pulmonary vessels Erythropoietin production Mitochondrial density in a muscle biopsy 7. Lysosomal enzymes are maximally active at Alkaline pH has no relation with pH Acidic pH neutral pH 8. An infant has a coarctation of the aorta that reduces renal blood flow to 50% lower than normal. Which of the following is increased in this infant? Blood flow in the lower body Renal excretion of sodium Glomerular filtration rate Plasma levels of angiotensin II 9. Constriction of which of the following types of blood vessels is most important for minimizing the decrease in mean systemic filling pressure caused by loss of 1 liter of blood? Aorta and large arteries Arterioles Venules and veins Capillaries 10. Which of the following binds to von Willebrand factor at the platelet membrane? Adenosine diphosphate (ADP) Glycoprotein GPIb Calcium Platelet factor 3 (PF3) 11. baroreceptor are located in None Tunica media Tunica advantita Tunica intima 12. Countercurrent mechanism in the kidney is responsible for Maintenance of blood flow Absorption of glucose Secretion of uric acid Osmotic gradient in medulla 13. which of the following is not a primary taste sweet chilli sour bitter 14. all are second messengers ecept DAG cAMP guanyl cyclise IP3 15. normal pH of stomach is 7 to 7.2 11 to 12 8 to 9 4 to 5 16. during cardiac imaging the phase of minimum motion of heart is late diastole mid diastole late systole mid systole 17. Stability of alveoli is maintained by Lung compliance negative intrapleural pressure Increase in alveolar surface area by the surfactant Residual air in alveoli 18. What is the role of the macrophage during antibody formation? Activation of cytotoxic CD8 T cells Delayed hypersensitivity reaction Processing antigen and presenting it to T helper CD4 cells Lysis of virus-infected cells 19. which of the following is the active form of calcium in circulation albumin bound calcium protein bound calcium ionized calcium phosphate bound calcium 20. If diameter of a vessel is doubled Blood flow increases four fold Blood flow increases sixteen fold Blood flow decreases sixteen fold Blood flow decreases four fold Loading … Question 1 of 20
