The salt gradient created by the kidney tubules ____.
A)occurs only in the proximal tubules
B)inhibits the reabsorption of water
C)draws water out of the ascending arm of the loop of Henle
D)occurs only within the kidney cortex
E)drives the reabsorption of other solutes and water

Question

The salt gradient created by the kidney tubules ____. ​
A)occurs only in the proximal tubules
B)inhibits the reabsorption of water
C)draws water out of the ascending arm of the loop of Henle
D)occurs only within the kidney cortex
E)drives the reabsorption of other solutes and water ​

Quizplus · Accepted Answer

The salt gradient created by the kidney tubules drives the reabsorption of other solutes and water. Specifically, the gradient is created within the loop of Henle, where the ascending limb actively transports sodium and chloride ions out of the tubule, while the descending limb is permeable to water. This results in a gradient where the interstitial fluid surrounding the ascending limb has a high concentration of sodium and chloride ions, while the interstitial fluid surrounding the descending limb has a lower concentration of these ions. This gradient drives the reabsorption of other solutes and water in the proximal and distal tubules.

The Salt Gradient Created by the Kidney Tubules ____