<prompt> Potassium is maximally absorbed in which pa of nephron?PCTDCTCollecting ductsLoop of Henle  <response>: Much of the filtered K is removed from the tubular fluid by active reabsorption in the proximal tubules K is then secreted into the fluid by the distal tubular cells. In the absence of complicating factors, the amount secreted is approximately equal to the K intake, and K balance is maintained. Ref: Ganong 25th edpage 681 