Epithelial cells of the proximal tubule have a lower concentration of Na+ than the filtrate.

Name: Epithelial cells of the proximal tubule have a lower concentration of Na+ than the filtrate.
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Question

Quizplus · Accepted Answer

Epithelial cells of the proximal tubule actively transport Na+ out of the cell into the interstitial space, maintaining a lower intracellular Na+ concentration compared to the filtrate. This gradient is essential for the reabsorption of substances from the filtrate back into the blood.

Epithelial Cells of the Proximal Tubule Have a Lower Concentration