Left auricle to left ventricle during auricular systole
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B
Right auricle to right ventricle during ventricular systole
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C
Right ventricle to aorta during ventricular systole
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D
Pulmonary vein to left auricle during auricular systole.
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Solution
The correct option is A Left auricle to left ventricle during auricular systole Atrial systole or auricular systole can be defined as the contraction of atria by which blood is forced into ventricles.
So, the correct option is 'Left auricle to the left ventricle during auricular systole'.