Where does the greatest percentage of Na⁺ reabsorption takes place?
A) proximal tubule
B) loop of Henle
C) distal tubule
D) collecting tubule

Question

Quizplus · Accepted Answer

The greatest percentage of Na⁺ reabsorption occurs in the proximal tubule, where about 65% to 70% of filtered Na⁺ is reabsorbed. The loop of Henle reabsorbs an additional 25% to 30% of filtered Na⁺, while the distal tubule and collecting tubule reabsorb the remaining 5% to 10%.

Where Does the Greatest Percentage of Na⁺ Reabsorption Takes Place