And that is to make sure that all that blood efficiently flows into the ventricles of the heart. Once our delay takes place, the depolarization within the AV bundle takes place and that generates an action potential that moves via the bundle of his. And then it splits into the left and right bundle and then even more splitting takes place until we get to our perkinji fibers. And these PerkinsI fibers, what they basically do is they allow these ventricles to contract in a forceful manner at the same exact time. So these atria contract first, then they relax, and then the ventricles contract while the atria relax. And that creates a single forceful motion of the heart and that pumps all that blood through the rest of our body.