As the amount of sodium increases in the blood around the distal convoluted tubule,the amount of potassium or hydrogen ions in the filtrate increases.

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Quizplus · Accepted Answer

This is because the sodium-potassium exchange mechanism in the distal convoluted tubule of the kidney allows for the reabsorption of sodium into the blood in exchange for secreting potassium or hydrogen ions into the filtrate, thus increasing their amounts in the filtrate as sodium levels in the blood increase.

As the Amount of Sodium Increases in the Blood Around