Question: The loop of Henle consists of an ascending limb and a descending limb. The descending limb is permeable to water but not to sodium or chloride, allowing for the reabsorption of water and the concentration of the tubular fluid. In contrast, the ascending limb actively transports sodium and chloride out of the tubular fluid into the surrounding interstitial fluid, which is crucial for creating a hyperosmotic environment that facilitates water reabsorption in the collecting duct. Rewrite, with no plagiarism. Need Assignment Help?