And as our blood plasma travels, as our filter travels across the proximal convoluted tubule, reabsorption as well as secretion begin to take place. So certain molecules such as, for example, amino acids, sodium ions, as well as other things such as our glucose molecules, are reabsorbed from the filtrate and back into our blood plasma. But other waste products such as, for example, hydrogen ions and creatine molecules, are secreted from the blood plasma and into the lumen of the proximal convolute. Now, notice that the Proximal convolute, the entire renal corpusal, is found inside the cortex portion of our kidney. Now, the filtrate eventually travels from the Proximal convolute tubule and into this Ushaped tubule known as the Loop of Henley. And the Loop of Henley can be subdivided into different sections.