And the reason it creates this delay in electrical signal is because it wants to make sure that the two atria finish contracting and finish moving all that blood into our ventricles of the heart. So once the AV node receives that electrical signal, that AV node delays that signal before actually depolarizing. And once it depolarizes, it also creates its own action potential that then moves via specialized cardiac fibers called the bundle of his. And these bundles of his are found within the wall that separates the right ventricle from the left ventricle. So let's move on to the following diagram. So in this diagram, this is our right ventricle, this is the left ventricle.