The question is why? Why is there a drop in blood pressure when we go from the arteries to the arterios and what is the benefit of that to our body? So the reason there is a drop in blood pressure is because our arterios have a relatively high area to volume ratio. And what that means is the volume of blood that travels inside our arterios interacts with much more of the surface area of the wall. And what that basically means is we have a much higher resistance and that decreases our pressure and it also decreases the velocity with which the blood actually moves along our arterios. Now, the question is why is that beneficial?