1. During a fast, a brief phase of intense sequential contractions begins in the stomach and gradually migrates to the ileum. Release of which of the following intestinal hormones is most likely responsible for this observed effect? Gastrin-releasing peptide Gastrin Motilin Cholecystokinin 2. site of RBC formation in a healthy 20 year old male is long bones liver flat bones yolk sac 3. Lysosomal enzymes are maximally active at has no relation with pH Acidic pH Alkaline pH neutral pH 4. Increasing urine flow rate from 1 mL/min to 10 mL/min will significantly increase the clearance of creatinine inulin urea penicillin 5. Compensation for high altitude will result in which of the following physiologic changes? Increased renal excretion of H+ ions Increased renal excretion of HCO3- Decreased production of erythropoietin Decreased 2,3-diphosphoglycerate (2,3-DPG) 6. Which of the following methods is used for calculation of anatomical dead space bohlers method Xenon dilution technique Spirometry Single breath nitrogen test 7. Which of the following regions of the nephron is capable of the greatest level of sodium reabsorption? Collecting duct Distal convoluted tubule Proximal convoluted tubule Thick ascending limb of the loop of Henle 8. Which of the following vascular structures contains the largest proportion of the total blood volume in a normal individual? Venules and veins Aorta and large arteries Capillaries Arterioles 9. complement factor used to identify activation through common pathway is C5 C3 C4 factor B 10. physiolgical response to smoking are all except decreased HDL increased hematocrit increased heart rate and increased catecholemine release decreased carboxyhemoglobin 11. Under normal conditions, the main drive for respiration is the arterial PCO2 acting through peripheral chemoreceptors arterial pH acting through central chemoreceptors arterial PCO2 acting through central chemoreceptors arterial pH acting through peripheral chemoreceptors 12. constitutive component of pulmonary endothelium cells lipoprotein lipase plasminogen activator thrombin factor X 13. cyanosis does not occur in severe anemia because oxygen hemoglobin curve shift to the right hypoxia stimulates erythropoietin production critical conc of Hb required to produce cyanosis is reduced oxygen carrying capacity of available Hb is increased 14. pulmonary compliance is decreased in all of the following conditions except decrease surfactant pulmonary congestion COPD pulmonary fibrosis 15. which of the following is also known as hemophilia B and has clinical finding identical with hemophilia A thrombocytopenia christmas disease vol willebrand disease hemophilia C 16. nitrogen narcosis is caused due to increase production of nitrous oxide increase solubility of nitrogen in nerve cell membrane nitrogen inhibits dismutase enzyme decrease in oxygen free radicals 17. the primary action of nitric oxide in the gastrointestinal tract is vasodilation gastrointestinal smooth muscle contraction vasoconstriction gastrointestinal smooth muscle relaxation 18. An increase in the concentration of 2,3 biphosphoglycerate (2,3DPG) may be seen in all of the following except Hypoxia Anemia Inosine Hypoxanthine 19. all are second messengers ecept IP3 cAMP DAG guanyl cyclise 20. Iron is conserved by Hepicidin None Hemopexin Hemimedins Loading … Question 1 of 20
