How many of the following functions can be correctly correlated with loop of Henle?

A. Reabsorption of nearly all of the essential nutrients.
B. Reabsorption in this segment is minimum.
C. A significant role in the maintenance of high osmolarity of medullary interstitial fluid.
D. Reabsorption of 70-80 percent of electrolytes and water.
E. Conditional reabsorption of Na⁺.

Options B and C are correct.

Functions of Henle's loop :

i. Maintenance of high osmolarity of medullary interstitial fluid.
ii. Reabsorption up to some extent (some water and electrolytes enter medullary fluid)
- Descending limb (impermeable to electrolytes): As the filtrate moves, water comes out and the filtrate becomes concentrated.
- Ascending limb (impermeable to water): As the filtrate moves, electrolytes come out and the filtrate becomes dilute.
- Reabsorption is minimum in Henle's loop.
- Its main function is to reabsorb water and sodium chloride from the filtrate. Only 15% of water is reabsorbed from the loop of Henle.