Now, recall in our discussion on the circulation system, we said that it's the heart that actually creates the hydrostatic pressure. And it allows the movement of fluid of blood plasma inside our blood vessels. And because the arterial end of the capillary is closer to the heart than the Venuel end of the capillary, what that means is the arterial end of the capillary will have a greater hydrostatic pressure than the Venuel side. So the hydrostatic pressure that is exerted on the walls of the capillary on the arterial end is about 41.3 Mercury. But on the venue end, it's about 21.3 mmhg. And we'll see what that means in just a moment.