Physiology Help? How is Renal Clearance of Na effected by increased water intake?
In a basic physiology lab we ran an experiment where we tested the renal clearance for sodium and water from a person with normal water intake and a hydrated person with 8 times the normal water intake. The results show that the clearance of water goes down very slightly and the sodium clearance increases sightly. Why?
Hoping for a pretty detailed explanation. I understand the coupling of water and sodium reabsorbtion, but thought that water was supposed to be able to be excreted without affecting other solutes...