Biology Body Fluids and Circulation Double Circulation and Regulation of Cardiac Activity, Cardiac Cycle,Heart Sound Single Correct MCQ
Published on: August 13, 2026

In human oxygenated blood flows from :–

A
Left auricle to left ventricle during auricular systole
B
Right auricle to right ventricle during ventricular systole
C
Right ventricle to aorta during ventricular systole
D
Pulmonary vein to left auricle during auricular systole

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Verified by Experts
The correct answer is:
NOT AVAILABLE

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'.

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