1. Conversion of angiotensin-I to angiotensin-II occurs in Lung Liver kidneys RBCs 2. Negative intrapleural pressure is due to Uniform disribution of surfactant over alveoli Presence of cartilage in upper airway Negative intraalveolar pressure Lymphatic drainage of pleura 3. vit K dependent clotting factors are 2,7,9,10 7,9,10 3,6,8 3,10,12 4. During normal diastole, which of the following is most important in preventing over- distension of the ventricles? Adjacent lungs Fibrous pericardium Aortic valve Diaphragm 5. What role do the lungs play in the pathogenesis of systemic hypertension? The alveolar capillaries contain aldosterone The alveolar capillaries contain antidiuretic hormone (ADH) The type II pneumocytes contain aldosterone The alveolar capillaries contain angiotensin-converting enzyme (ACE) 6. maximum postprandial motility is seen in transverse colon ascending colon sigmoid colon descending colon 7. In which segment of the systemic circulation does the greatest decrease in blood pressure occur? Aorta and large arteries Capillaries Arterioles Small arteries 8. orthopnea in heart failure develops due to reservior function f pulmonary veins reservior function of leg veins reservior function of leg arteries reservior function of pulmonary arteries 9. which of the following is required for conversion of prothombin to thrombin thromboplastin stable factor fibrin labile factor 10. Transport of Carbon monoxide is diffusion limited because High affinity of CO for haemoglobin Alveolar membrane is less permeable to CO On exposure to air,there is sudden increase in partial pressure CO crosses epithelial barrier slowly 11. which of the following statements is true clearance of a substance is always more than GFR if there is tubular secretion fluid coming from the descending limb of loop of henle is hypotonic if clearance of substance is greater than GFR then tubular secretion must be present descending limb of loop of henle is permeable to solutes 12. Which of the following adjustments have probably occurred in the cardiac cycle if the pulse is greater than 200/min and the blood pressure is 75/40 mm Hg? Systolic time has decreased and diastolic time has increased Diastolic time has decreased but systolic time had decreased more Systolic time has decreased but diastolic time has decreased more Diastolic time has decreased and systolic time had increased 13. ST segment of ECG corresponds to Atrial depolarisation AV conduction Ventricular repolarisation Ventricular depolarization 14. all are second messengers ecept cAMP guanyl cyclise IP3 DAG 15. which of the following enzyme is stable at acidic pH pepsin carboxypeptidase trypsin chymotripsin 16. Pulmonary circulation is characterised by vasodilation in response to hypoxia Resistance is greater than systemic circulation Vasoconstriction in response to hypercapnia vasoconstriction in response to hypoxia 17. Windkessel effect in large arteries perform what function Prevent fluctuation in BP provide peripheral resistance Exchange of respiratory gases Maintain intravascular volume 18. Spirometry can demonstrate and measure all of the following except Tidal volume Vital capacity Inspiratory reserve capacity Residual volume 19. A patient with severe anemia may have which of the following symptoms? Bradycardia Low stroke volume Wide pulse pressure Cyanosis 20. 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 box Decrease in both Increase in lung, decrease in box Increase in both Decrease in lung, increase in box Loading … Question 1 of 20
