In the Lumen of the Proximal Tubule, Na⁺ Concentration ________

question 65

Multiple Choice

In the lumen of the proximal tubule, Na⁺ concentration ________ the Na⁺ concentration inside the cells of the tubule wall.

• A) is much higher than
• B) is slightly higher than
• C) is about the same as
• D) is slightly lower than
• E) is much lower than

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