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Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
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In proximal convoluted tubule H+ is exchanged for?
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The correct answer is  Ans. (d) Na+Ref: Guyton physiology 11th ed. / 55* Sodium-hydrogen counter-transport occurs in several tissues.* An important example is in the proximal tubules of the kidneys, where sodium ions move from the lumen of the tubule to the interior of the tubular cell, while hydrogen ions are counter transported into the tubule lumen.