Rajiv Gandhi University of Health Sciences, Karnataka
MBBS Phase – I
(CBME) Degree Examination – 12-Feb-2021
Time: Three
Hours Max. Marks: 100 Marks
PHYSIOLOGY –
PAPER – I (RS-4)
Q.P. CODE: 1022
Your answers should be specific to the questions asked
Draw neat, labeled diagrams wherever necessary
LONG ESSAYS 2 X 10 = 20 Marks
1. Mention
the events of a cardiac cycle with their durations. Explain the left
ventricular pressure and volume changes during cardiac cycle. (3+7)
2. Name
the neural regulatory centers of respiration and explain their role in
regulation. Illustrate Cheyne-Stokes breathing. (3+4+3)
SHORT ESSAYS 10 x 5 = 50 Marks
3. Explain
feedback regulation with suitable examples. (2.5+2.5)
4. Describe
the effects of mismatched blood transfusion. (5)
5. A
16 year old boy was brought to the hospital with excessive bleeding from an
injury in his foot. He has a past history of similar delayed stoppage of
bleeding associated with swelling of injured parts following blunt trauma. One
of his paternal uncles also had a similar history. Investigation revealed: Hb -
14 g/dl, Platelet count - 3.5 lakhs/mm3, BT - 5 minutes, CT - 12 minutes.
a. Mention
the probable diagnosis and cause for the same.
b. Mention
the type of inheritance of this disorder.
c. Name
another bleeding disorder with the cause. (2+2+1)
6. Explain
the role of complement system in immunity. (5)
7. Explain
the role of renin-angiotensin-aldosterone system in BP regulation. (5)
8. List
the theories of auto-regulation of blood flow and explain any two. (2+3)
9. Define
and classify hypoxia. Explain their causes and treatment. (2+3)
10. Describe
the defecation reflex with illustration. (5)
11. Explain
the cause for splay in reabsorption of glucose by Nephrons. (5)
12. Define
GFR. Explain the factors regulating the same. (1+4)
SHORT ANSWERS 10 X 3 = 30 Marks
13. List
the functions of WBCs. (3)
14. Explain
the basis of enhanced immune response to booster doses of vaccine. (3)
15. Mention
the symptoms and ECG changes in ischemic heart disease. (2+1)
16. Illustrate
and mention the physiological basis of radial pulse tracing. (3)
17. Define
functional residual capacity. Mention its normal value and methods for its
measurement. (1+1+1)
18. Mention
the composition and functions of bile. (1.5+1.5)
19. Define
jaundice. Mention the clinical features of obstructive jaundice. (1+2)
20. Mention
its cause and treatment of achalasia cardia. (1.5+1.5)
21. Compare
and contrast cortical and juxta-medullary Nephrons. (3)
22. Mention
the sites of water reabsorption in Nephrons with its principle. (3)