6. What does the S2-S1 interval represent in the cardiac cycle? What Is/are the
ID: 61764 • Letter: 6
Question
6. What does the S2-S1 interval represent in the cardiac cycle? What Is/are the chemical and mechanical chemical that event during this inters ail of the cardiac cycle? Electric event Mechanical event Add the average S1 ? S2. inters-al and the average S2-S1 interval. How does the sum 01 these intervals compare to the average beat period measured? If they are not the same what accounts for the difference between the sum of these intervals and the beat period? How does the duration of S1 compare to the duration of S2? Circle one: S1 longer duration / S2, longer duration There are four heart sounds associated with the cardiac cycle: 1st heart sound (S1.or lub). 2nd heart sound (S2 or dub). 3rd heart sound (S4). and 4th heart sound (S4). Identify the following by the appropriate heart sound number. Label the location of each sound within the ECG( tracing in the following figure. Semilunar value closure Final ventricular filling Passive ventricular filling Atrioventricular salve closureExplanation / Answer
6. The interval between the S2-S1 represents the diastolic phase of the cardiac cycle.
Mechanical events: During diastole, the atria and ventricles of your heart relax and begin to fill with blood.
Electrical events: During diastole, the SA (sino atrial) node does not send any electric impulses, so atria muscles relax to fill with blood, and then it’s the turn for AV (Atrioventricular) node, it also does not send any impulses, so ventricular muscles relax to fill with blood.
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