So this entire tubular section is known as the Proximal Convoluted tubule. Now, right below the Proximal stray tubule is a U shaped structure not shown, known as the Loop of Henley. And we'll discuss that and its function in the next lecture. So this entire segment, the Proximal convolute Tubule, is located entirely in the renal cortex of the kidney, in the outer portion of the kidney, below the renal medulla. So this is the cortex and this is the medulla that is not shown. Now, what exactly is the function of the Proximal Convoluted tubule?