FIRST YEAR B.H.M.S. DEGREE EXAMINATION, DECEMBER 1999                                 
 PHYSIOLOGY AND BIOCHEMISTRY—Paper I
Time : Three Hours      Maximum : 100 Marks
Answer five long questions and five short questions.
Draw diagrams wherever necessary.

I  Answer any five
1.Classify leukocytes and describe their functions
2.Define Action potential. Give the ionic basis of action potential produced in aneurone and how it is recorded.
3.Give an account of the Electrical, Mechanical and Pressure changesassociated with cardiac cycle
4.Give the normal heart rate and how it is regulated
5.Draw an oxygen dissociation curve and describe the factors that influence it
6.Give the name of the functional unit of kidney and describe its structure in detail.

II  Answer any five
1. Reticulocyte.
2. Erythroblastosis foetalis.
3. ECG.
4. Residual volume.
5. Ossicles of middle ear.
6. Hypoxic hypoxia.
7. Ultrafiltration.