Which of the following most accurately describes the renal transport of Na⁺?

Question

Quizplus · Accepted Answer

Na⁺ is actively transported in the proximal tubule with the help of the Na⁺/K⁺-ATPase pump, which creates a concentration gradient that allows for the secondary active transport of other solutes such as glucose and H⁺. Most of the Na⁺ reabsorption occurs in the proximal tubule, but some additional reabsorption occurs in the loop of Henle and distal convoluted tubule. Na⁺ is not actively secreted into the nephron lumen, so options A, C, and D are incorrect. Option E is partially correct in that Na⁺/K⁺ ATPase pumps are responsible for the active transport of Na⁺ in the proximal tubule but this option does not mention secondary active transport or the involvement of glucose and H⁺.

Which of the Following Most Accurately Describes the Renal Transport