Excretory System In Human

The descending loop of Henle receives hypotonic fluid from the proximal convoluted tubule (PCT).

Substances reabsorbed in the PCT include urea, water, potassium, etc.

The interstitium of the kidney increases in osmolarity outside.

In the ascending portion, the loop becomes impermeable to water.

Flow of the fluid through the entire loop of Henle is considered slow.