Q.P. Code: 103001 Reg. No.: ……………
First Professional MBBS Degree Supplementary Examinations
January 2019
Physiology - Paper I
Time: 3 Hours Total Marks: 50
- Answer all questions
- Draw Diagrams wherever necessary
Long essay (10)
1. A 16 years old boy had continuous oozing of blood following tooth extraction for
caries. Answer the following:
- What is the probable cause of the bleeding.
- Describe the extrinsic pathway of clotting using a schematic diagram.
- Mechanism of action of heparin as an anticoagulant.
- Role of vitamin K in clotting.
- Explain why blood does not normally clot inside the body (1+3+2+2+2)
Short essays (2x5=10)
2. Describe briefly the mechanical events of cardiac cycle.
3. Factors influencing glomerular filtration.
Answer briefly (5x3=15)
4. Second stage of deglutition
5. Differentiate between Haldane and Bohr effect.
6. Factors affecting diffusion across respiratory membrane
7. Entero-hepatic circulation
8. Glomerulo-tubular feedback
Draw and label (2x2½ =5)
9. ECG in lead II
10.Pressure changes during normal respiratory cycle
Explain the physiological basis of the following (5x2=10)
11.Change in heart rate during exercise
12. Mucosal barrier and peptic ulcer
13. Hypoxia in cyanide poisoning
14. Reactive hyperemia
15. Tubular maximum and renal threshold for glucose
