So within a thin ascending lupa fennelly, the chloride and sodium ions will once again move passively without using any energy to the interstituent. Now, as we'll see in the next lecture, when we discuss our collecting duct, what the loop of Henley does is it increases the concentration of solute inside the surrounding tissue. And that allows water to be reabsorbed not only in the descending loop of Henley, but also in the collecting duct, the final tubial portion of our nephron. So, once again, let's summarize our discussion. So, the loop of hemle is this Ushaped structure that is found inside the medulla portion of the kidney. And it uses a countercurrent multiplier system.