And so that creates a high resistance. And that's exactly why the ventricles of our heart have to create such a strong force, such a high hydrostatic pressure to move all that blood through these arteries that have a relatively high resistance. So when the ventricles contract, they fill our blood vessels, they fill the arteries. And as a result of the elastic nature of these blood vessels, it causes them to actually recoil. And when they recoil, that is exactly what moves that blood through the rest of our arteries. So this is how blood flows inside the artery.