Define cardiac cycle commences that is electrical excitation

Reference no: EM13671518

From the point at which the cardiac cycle commences that is the electrical excitation is initiated in the S.A node arrange the subsequent events in the correct sequence.

1. Opening of semi lunar valve

2. Ventricular systole

3. Atrial systole

4. Second heart sound

5. Opening of bicuspid valve rapid blood flow atria

6. to ventricles

Reference no: EM13671518

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