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Q.P. Code: 103001
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Reg. no.: .........................
First Professional MBBS Degree Supplementary Examinations, February 2014
PHYSIOLOGY – Paper I
Time: 3 Hours Total Marks: 50
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- Answer all questions
- Draw Diagrams wherever necessary
Long essay (10)
- A 40 years old man was admitted to hospital with complaints of difficulty in breathing and shortness of breath following a head injury. Answer the following:
- With the help of diagrams describe two types of periodic breathing
- Explain the physiological basis for the changes in periodic breathing
- Describe the role of peripheral chemo receptors in regulation of normal respiration (3+2+5=10)
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Short essays (2x5 =10)
- Discuss the factors affecting cardiac output and add a note on Brainbridge reflex
- Describe the counter current multiplier in the kidney
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Answer briefly (5x3=15)
- Hypoxic hypoxia
- Proteolytic pancreatic enzymes
- Auto regulation of glomerlular filtration rate
- First and second heart sounds
- Gastric emptying time
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Draw and label (2x2½ =5)
- Left Ventricular pressure changes recorded during a normal cardiac cycle
- Effect of pH on the oxygen - hemoglobin dissociation curve
Explain the physiological basis of the following (5x2=10)
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- Oxygen debt
- Receptive relaxation
- Prolonged standing results in fainting attacks
- Prolonged action potential in cardiac muscle
- Protective effect of vaccination
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