Problem: Explain water conservation by the kidney. Why is water conservation important? Can we reabsorb water the same way we reabsorb substances like glucose? How much water is reabsorbed in the nephron tubule (PCT, NL, DCT)? How much water has to be "tricked" into being reabsorbed by the nephron loop and collecting duct? (In other words, how much would we lose if we didn't do water conservation?) What is the mechanism for conserving water? What is special about the medulla? How does it get that way? Which part of the nephron makes it that way, and how? Which part of the nephron controls the rate of water conservation? How does that work? Be sure to describe the hormone and channels involved. What effect does alcohol have on water conservation? What is the mechanism? Need Assignment Help?