In fact, there is a net loss of about 10% of the fluid that exists that takes place and that extra fluid, the 10% of the fluid that leaves our capillaries into our Lymphatic system. And the Lymphatic system ultimately returns that fluid to our blood circulating throughout our circulation system. And we'll talk much more about what the Lymphatic system is in a future lecture. So we see that the exchange in our fluid between the wall of the capillary takes place due to these junctions and slits between the endothelial cells. Now, the reason it takes place, the reason we have a net fluid flow is because of a difference in pressure. On the arterial side, we have a greater hydrostatic pressure than azmodic pressure.