<prompt> Potassium is maximally absorbed in which part of nephron?Proximal convoluted tubulesDCTCollecting ductsLoop of Henle  <response>: POTASSIUM: REABSORPTION AND SECRETION K is the only electrolyte that is reabsorbed as well as secreted. 65 of the K is reabsorbed in PCT, 25 in loop and 10 reaches the distal nephron. Active reabsorption in PCT; secreted in DCT Maximum secretion. K secretion is decreased when the amount of Na reaching the DCT is small. K secretion is also decreased when the H secretion is increased. In DCT, Na is reabsorbed and K and H compete for their secretion for the amount of Na reabsorbed. For K and H , remember the terms hypokalemic alkalosis and hyperkalemic acidosis 