We have this cup shaped structure right here which is the Bowman's capsule. And within the cavity of this Bowman's capsule we have a network of blood capillaries known as the glomerulus. So our a fair arterial brings and carries the oxygenated blood filled with nutrients as well as waste products into the glomerulus. And the blood that travels through that glomerulus basically is filtered. So about 20% of that blood enters the space of the Bowman's capsule through a region known as our filtration layer that we're going to discuss in just a moment. And the rest of that blood, about 80% of it, is carried via and into the effing arterial that carries the rest of that blood to the vase erecta, the second capillary system of our nephron.