Which of the following statements on sodium movement in the renal tubules is TRUE?
A) Sodium channels are located on the basolateral membrane of principal cells.
B) Sodium is actively secreted from the collecting duct.
C) Sodium reabsorption follows water reabsorption in all segments of the renal tubules.
D) Sodium is actively transported across the basolateral membrane of both the proximal and distal tubule.
E) Sodium is actively secreted from the proximal tubule.
Answer: D) Sodium is actively transported across the basolateral membrane of both the proximal and distal tubule.
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