Water reabsorption by the renal tubules uses
A)active transport.
B)cotransport.
C)solvent drag.
D)osmosis.
E)None of these choices is correct.

Question

Quizplus · Accepted Answer

Water reabsorption by the renal tubules uses osmosis, which is the movement of water across a selectively permeable membrane from an area of high water concentration to an area of low water concentration. This occurs primarily in the collecting ducts, where the osmolarity of the surrounding interstitial fluid is very high due to the presence of concentrated solutes such as urea and sodium. As a result, water is passively reabsorbed into the medullary interstitial fluid, allowing the body to conserve water and maintain a proper balance of electrolytes.

Water Reabsorption by the Renal Tubules Uses