Physiology (Revised Scheme) Sept 2004, Paper 1

Max Marks: 100
Long Essays: [9 marks each]
1. Explain how plasma albumin determines fluid movement across capillaries. Name four other functions of plasma proteins. [7+2=9 marks]
2. Describe the role of the different types of blood vessels. Explain how it is related to their structure. [6+3=9 marks]

Short Essays: [5 marks each]
3. List the changes in erythroid precursors during maturation. Explain the basis of macrocytic anemia. [3+2=5 marks]
4. Draw a labelled diagram to show the membrane potential of cardiac pacemaker tissue. Explain the effect of vagal stimulation on this potential. [2+1+2=5 marks]
5. Write the Poiseuille Hagen formula. Name two factors that normally alter in it and explain the effect of each. [2+1+1=5 marks]
6. List six changes in the cardiovascular system in response to muscular exercise. Explain the purpose of any one change. [3+2=5 marks]
7. Name the muscles of inspiration and expiration. Explain the role of muscles in normal respiration. [3+2=5 marks]
8. Draw the oxygen hemoglobin dissociation curve. Explain the significance of its shape. [2+3=5 marks]
9. Name the components of the enteric nervous system and outline its functions. [2+3=5 marks]
10. Name four stimuli that increase gastrin secretion. List the physiologic actions of gastrin. [2+3=5 marks]
11. Draw a diagram to show the structure of the renal filtration membrane. Explain the significance of each layer. [2+3=5 marks]
12. Give the formula to determine effective filtration pressure in glomerular capillaries and state the normal values.

Short Answers: [2 marks each]
13. Name two anticoagulants used in the laboratory and explain the mechanism of action of any one. [1+1=2 marks]
14. Name two tests to assess platelet function and give the normal value of each. [1+1=2 marks]
15. Define Hematocrit value. Give its significance. [1+1=2 marks]
16. Classify body fliud compartments. Give their normal values.
17. Compare Simple diffusion and Facilitated diffusion.
18. Define Vital capacity. Give its normal value. Name two physiological conditions where it is decreased.
19. Define “Dead space” air and give its importance.
20. Draw a labelled diagram to show the layers of respiratory membrane.
21. Give the normal content of oxygen and carbon dioxide in blood.
22. List four changes during acclimatization to high altitude.
23. What is Achalasia cardia? What is it due to?
24. Name the bile salts. Give any two functions.
25. Role of receptive relaxation in stomach.
26. List the enzymes produced by intestinal mucosa.
27. Name two substances absorbed mainly in lower small intestine. Give the role of any one.
28. What is artificial kidney? Give any two indications.

Question paper submitted by:
2003-04 Batch, BMC


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