Question

What does the depolarisation of ventricles initiate by atrial sydtole?

Answer 1

Contraction of the atria followsdepolarization, represented by the P wave of the ECG. As both atrialchambers contract—from the superior region of the atria toward the atrioventricular septum—pressure rises within the atria and blood is pumped into the ventricles through the open atrioventricular valves.

Answer 2

Contraction of the atria followsdepolarization, represented by the P wave of the ECG. As both atrial chambers contract—from the superior region of theatria toward the atrioventricular septum—pressure rises within the atria and blood ispumped into the ventricles through the open atrioventricular valves.