Read the following statements carefully and choose the correct option Statement I: The descending limb of the loop of Henle is impermeable to water. Statement II: The ascending limb of the loop of Henle is permeable to water.

Step-by-step solution

Reabsorption is minimal in its ascending limb. However, this region plays a significant role in the maintenance of high osmolarity of medullary interstitial fluid. The descending limb of the loop of Henle is permeable to water but almost impermeable to electrolytes. This concentrates the filtrate as it moves down. The ascending limb is impermeable to water but allows transport of electrolytes actively or passively. Therefore, as the concentrated filtrate passes upward, it gets diluted due to the passage of electrol