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Biology 7 Online
OpenStudy (anonymous):

In a heart at rest, the majority of the blood flows into the ventricles during: Answer atrial systole and ventricular diastole atrial and ventricular systole atrial and ventricular diastole atrial diastole and ventricular systole

OpenStudy (zubhanwc3):

id gess a

OpenStudy (anonymous):

must be A or C I'm confused!

OpenStudy (petiteme):

atrial systole and ventricular diastole? :) Guess @_@

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