It is the contraction of the atria during atrial systole that completes the filling of the ventricles while the ventricles are in diastole.
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Q70: The _ circuit consists of the chambers
Q71: Normal passage of blood from the atria
Q72: The gap junctions of intercalated discs provide
Q73: All of the heart's sulci house blood
Q74: Though the autonomic innervation by autonomic centers
Q76: All cardiac veins eventually drain into the
Q77: About seventy percent of the ventricle filling
Q78: The relatively small size of the Purkinje
Q79: The right and left coronary arteries are
Q80: During ventricular contraction the semilunar valves close
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