M.B.B.S-M.B.B.S 1st Year PHYSIOLOGY – Paper I(Kerala University of Health Sciences-2014)

 Q .P. Code- 103001                                                                 Reg. no.: .............

          First Professional MBBS Degree Supplementary Examinations, February 2014
                                                                   PHYSIOLOGY – Paper I

Time: 3 Hours                                                                                                            Total Marks: 50

• Answer all questions
• Draw Diagrams wherever necessary

 

Long essay                                    (10)

1. 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 :      (3+2+5=10)

• 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

 

Short essays                     (2x5 =10)

2. Discuss the factors affecting cardiac output and add a note on Brainbridge reflex

3. Describe the counter current multiplier in the kidney

 

Answer briefly              (5x3=15)

4. Hypoxic hypoxia

5. Proteolytic pancreatic enzymes

6. Auto regulation of glomerlular filtration rate

7. First and second heart sounds

8. Gastric emptying time


Draw and label              (2x21⁄2 =5)

9. Left Ventricular pressure changes recorded during a normal cardiac cycle

10. Effect of pH on the oxygen – hemoglobin dissociation curve

 

Explain the physiological basis of the following           (5x2=10)

11. Oxygen debt

12. Receptive relaxation

13. Prolonged standing results in fainting attacks

14. Prolonged action potential in cardiac muscle

15. Protective effect of vaccination

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