It also contains the proximal and the distal convoluted tubules. And we'll see what that is in just a moment. Now, if we move to right below the renal cortex, we have a section known as the renal medulla. The renal medulla is basically this entire section here that consists of these renal pyramids. And the renal pyramids exist as a result of the stacking of these nephrons. They basically are stacked adjacent to one another along the entire section of the medulla as well as the cortex, and they form these renal pyramids.