The main force responsible for water reabsorption from the collecting ducts is the low hydrostatic pressure in the surrounding interstitial space.

Question

Quizplus · Accepted Answer

The main force responsible for water reabsorption from the collecting ducts is the osmotic gradient created by the high concentration of solutes (mainly sodium and urea) in the surrounding interstitial space, which draws water out of the collecting ducts into the surrounding tissues.

The Main Force Responsible for Water Reabsorption from the Collecting