The ascending limb of the nephron loop
A) pulls salt from the renal medulla to make the filtrate more concentrated.
B) is the primary site of tubular secretion.
C) is permeable to salt.
D) is permeable to water.
E) responds to high levels of ADH in the blood.

Question

Quizplus · Accepted Answer

The ascending limb of the nephron loop is permeable to salt but not to water, allowing it to actively transport salt into the interstitial fluid, which helps in the concentration of urine.

The Ascending Limb of the Nephron Loop