1.Describe the electrical events occurring in the heart that are responsible for the P wave, QRS complex and T waves of the ECG. What is happening to the myocardium during (1) the PR interval and (2) the ST segment?
2.Question 2: Compare the effect of exercise on the IHR and the periods of ventricular systole (QT) and ventricular diastole (TQ). Which of the periods is changed more in your data and why would one period of the cardiac cycle (systole or diastole) change more than the other? In your answer, indicate what electrical characteristic of the myocardial cell determines why one of the periods changes less than the other (systole or diastole).
3Was the Bainbridge reflex initiated in the subject? In your rationale, describe the expected changes that occur as a result of the Bainbridge reflex (start with deep inhalation and end with the expected change in heart rate that characterizes the Bainbridge reflex) â how does each step in the process lead to the expected change in heart rate: include receptors and ion channels involved.
4Describe the changes in stimulation of the baroreceptor that occur during phase II and phase IV of the Valsalva maneuver. How does that change in baroreceptor activation alter heart rate (be specific for each phase of the response)?
5.What is the source of S1 and S2 detected by the phonocardiogram (what causes the valves to change in that way)? Describe how the pressure wave that travels through the vasculature is generated.
What does the velocity of that pressure pulse wave tell one about vasculature condition?
1.Describe the electrical events occurring in the heart that are responsible for the P wave, QRS complex and T waves of the ECG. What is happening to the myocardium during (1) the PR interval and (2) the ST segment?
2.Question 2: Compare the effect of exercise on the IHR and the periods of ventricular systole (QT) and ventricular diastole (TQ). Which of the periods is changed more in your data and why would one period of the cardiac cycle (systole or diastole) change more than the other? In your answer, indicate what electrical characteristic of the myocardial cell determines why one of the periods changes less than the other (systole or diastole).
3Was the Bainbridge reflex initiated in the subject? In your rationale, describe the expected changes that occur as a result of the Bainbridge reflex (start with deep inhalation and end with the expected change in heart rate that characterizes the Bainbridge reflex) â how does each step in the process lead to the expected change in heart rate: include receptors and ion channels involved.
4Describe the changes in stimulation of the baroreceptor that occur during phase II and phase IV of the Valsalva maneuver. How does that change in baroreceptor activation alter heart rate (be specific for each phase of the response)?
5.What is the source of S1 and S2 detected by the phonocardiogram (what causes the valves to change in that way)? Describe how the pressure wave that travels through the vasculature is generated.
What does the velocity of that pressure pulse wave tell one about vasculature condition?
