14-08-2013, 04:25 PM
QUESTION BANK ELECTRO-PHYSIOLOGY AND BIO-POTENTIAL RECORDING
BANK ELECTRO-PHYSIOLOGY.docx (Size: 42.29 KB / Downloads: 21)
PART – A( 2 Marks)
1. What are the objectives of a biomedical instrumentation system?
2. Define the term conduction velocity.
3. Explain the difference between in vivo and in vitro measurements.
4. Name the major physiological systems of the body.
5. What is meant by cell?
6. What are resting and action potential, bioelectric potential?
7. Define the process of sodium pump.
8. Draw an action potential waveform and label the amplitudes and time values.
9. What specific features might be incorporated into an instrument designed for clinical use as
opposed to one designed for research purposes?
10. What do you understand by the term "gage factor”?
11. What is the difference between an active and a passive transducer?
12. What are the characteristics of carrier amplifier?
13. What is meant by drift compensation in operational amplifiers?
14. Define an electrometer amplifier. What are its characteristics?
15. What is the purpose is of pre-amplifier isolation circuits in ECG circuit?
16. What is the purpose of auxiliary amplifier in ECG unit?
17. What is input isolation?
18. What is the function of chopper amplifier?
19. Define Lead. Name the types of leads used for ECG.
20. What are micro, needle and surface electrodes?
21. Define electrode, what are the types of electrodes.
22. What is electrode potential (or) half-cell potential? What are polarisable and non polarisable
electrodes?
23. What are the characteristics of resting potential?
24. For a patient, which types of electrode would be the least traumatic?
25. Why microelectrodes are sometimes needed?
26. What are the problems involved in using flat electrodes in terms of interference or high
impedance between electrode and skin? How could you help eliminate this problem? / What
are the uses of the electrode paste applied during biomedical recording?
27. What do you understand by the term "reference electrode”?
28. What is a glass electrode used for?
29. What is an ear-clip electrode used for?
30. What is the major advantage of floating-type skin surface electrodes?
31. What is the hydrogen ion concentration of blood with a pH of 7.4?
32. What are parts of central nervous system?
33. Name the parts that contain peripheral nervous system.
34. Define circulatory system.
35. Define Einthoven triangle.
36. What is electro encephalography?
37. What is evoked potential?
38. What is meant by brain waves and what are the types of brain waves?
39. Draw the waves of brain.
40. What is electromyography?
41. How would you state the sensitivity characteristics of an electrocardiograph to give a 2-in.
deflection on a recorder for a 2-mV peak reading?
42. What is the difference in the information contained in a phonocardiogram and an
electrocardiogram?
43. If a person stands up, does his blood pressure increase? Why?
44. If a person eats a large meal, does his heart rate increase? Why?
45. What part of the cardiovascular system contains the greatest volume of blood?
46. What is meant by ‘Depolarization’?
47. What is ‘Absolute Refractory Period’?