Lab Report

1. What can you say about the amplitude of the various waves in different cardiac cycles?

2. The P wave and the QRS complex represent depolarization of the atrial and ventricular muscle respectively. Why does the QRS complex have the largest amplitude?

2. The P wave and the QRS complex represent depolarization of the atrial and ventricular muscle respectively. Why does the QRS complex have the largest amplitude?

3. Heart rate is able to be calculated based upon the peak-to-peak interval of the R waves. Was there variability between the beats? Would you expect the interval between beats to be identical? Why or why not?

3. Heart rate is able to be calculated based upon the peak-to-peak interval of the R waves. Was there variability between the beats? Would you expect the interval between beats to be identical? Why or why not?

4. The range for a normal resting heart rate is 60 to 90 bpm. A trained athlete could have a resting heart rate of 45 to 60 bpm. Why might a very fit person have a slower heart rate than someone of average fitness?

4. The range for a normal resting heart rate is 60 to 90 bpm. A trained athlete could have a resting heart rate of 45 to 60 bpm. Why might a very fit person have a slower heart rate than someone of average fitness?

5. Are the amplitudes and durations of the various waves in different individuals similar or very different?

5. Are the amplitudes and durations of the various waves in different individuals similar or very different?

6. What variations in heart rate did you observe between individuals?

6. What variations in heart rate did you observe between individuals?

Exercise 2: ECG and heart sounds

7. Explain why ventricular contraction (systole) and the 'lub' sound occur immediately after the QRS complex.

7. Explain why ventricular contraction (systole) and the 'lub' sound occur immediately after the QRS complex.

8. Explain why ventricular relaxation (diastole) and the 'dub'...