Two basic processes exist in the kidney, filtration and reabsorption. reabsorption occurs in which of the following kidney structures?
glomerulus
pelvis
bowman's capsule
tubules

It would be in the Tubules, both the proximal and the convoluted tubules. In the tubules, most of the reabsorption happens such as sodium, wherein approximately 65 percent of it is reabsorbed. In the process of reabsorption, both water and the solutes are eliminated from the tubular fluid. Once it is removed, this is then sent into the blood.