What occurs in the descending limb of the loop of Henle?
A) Sodium and chloride are actively pumped out.
B) Sodium and chloride diffuse out.
C) Water diffuses out.
D) Water is actively pumped out.

Question

Quizplus · Accepted Answer

In the descending limb of the loop of Henle, the permeable walls allow for water to diffuse out of the tubule and into the surrounding interstitial fluid, which is hyperosmotic due to the concentration of solutes in the ascending limb. This allows for the concentration of urine and reabsorption of water. Sodium and chloride are not actively pumped out or diffused out in the descending limb.

What Occurs in the Descending Limb of the Loop of Henle