Which of the Following Is True of Potassium Ions

question 121

Multiple Choice

Which of the following is true of potassium ions?

• A) they are actively secreted in the proximal tubule
• B) their concentration is controlled by aldosterone
• C) changes in concentration can affect membrane excitability
• D) are reabsorbed in the distal tubule
• E) both (b) and (c)

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