1. Carbon dioxide is transported in blood by a variety of mechanisms.Which of the following is quantitatively the most important method for transporting CO2? As carbaminohemoglobin As CO2 in physical solution As sodium bicarbonate in serum As CO2 in gas bubbles 2. all of the following are true ablout intestinal motility except does not depend upon gastric motility increased by acetylcholine increased by distension increased by cholecystokinin 3. What role do the lungs play in the pathogenesis of systemic hypertension? The alveolar capillaries contain angiotensin-converting enzyme (ACE) The alveolar capillaries contain aldosterone The alveolar capillaries contain antidiuretic hormone (ADH) The type II pneumocytes contain aldosterone 4. why fetal cells continue to divide but terminally differentiated adult cells do not divide there are many cyclin inhibitors which prevent cell from entering into S phase in adults phosphatase is absent in fetal cells absence of CD kinase proteinase is absent in fetus 5. vagal stimulation of the heart causes increased force of heart contraction increased cardiac output increased R-R interval in ECG increases heart rate 6. Following is given with iron to increase its absorption Alkalies Antacids Citrus fruits Milk 7. Vagal stimulation of the heart causes decrease in heart rate by Increase in repolarisation Decrease in slope of prepotential Decrease conduction Decrease in action potential spike 8. Proximal convoluted tubule have which type of aquaporins Aquaporin 9 Aquaporin 5 Aquaporin 1 Aquaporin 2 9. 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? Diameter of pulmonary vessels Mitochondrial density in a muscle biopsy Renal bicarbonate (HCO3-) excretion Erythropoietin production 10. which of the following is required for conversion of prothombin to thrombin fibrin stable factor thromboplastin labile factor 11. True about bezold-jarish reflex Hyperpnea Hypertension Hypotension Tachycardia 12. The resultant decrease in blood flow causes by partial obstruction of the renal artery by an atherosclerotic plaque increases release of an enzyme from which of the following structures? Kupffer cells Afferent arterioles Arcuate arteries Juxtaglomerular cells 13. Salivary amylase is activated by K+ HCO3 Na+ Cl 14. Which of the following binds to von Willebrand factor at the platelet membrane? Calcium Platelet factor 3 (PF3) Adenosine diphosphate (ADP) Glycoprotein GPIb 15. Least conduction velocity is seen in Purkinje fibres Bundle of Hiss Ventricular myocardial fibres AV node 16. Which of the following regions of the nephron is capable of the greatest level of glucose reabsorption? Distal convoluted tubule Collecting duct Thick ascending limb of loop of henle Proximal convoluted tubule 17. absorption of dietary iron from GIT is not affected by simultaneous intake of sodium chloride ascorbic acid milk calcium 18. The blood within the vessels doesnot clot normally because Sodium citrate in plasma chelates calcium ions Thrombin has a positive feedback on plasminogen Vascular endothelium is smooth and coated with glycocalyx Vitamin K antagonists are present in plasma 19. If diameter of a vessel is doubled Blood flow increases four fold Blood flow decreases four fold Blood flow decreases sixteen fold Blood flow increases sixteen fold 20. interleukins and growth factors are matrix metalloproteinases phosphoproteinases neurotransmitters hormones Loading … Question 1 of 20
