Parietal Cells Acidify the Stomach Contents While Maintaining a Neutral

question 32

Multiple Choice

Parietal cells acidify the stomach contents while maintaining a neutral cytosolic pH by:

• A)exporting "excess" cytosolic OH- as HCO₃-.
• B)exchanging HCO₃- for Cl-.
• C)preserving electroneutrality by accompanying the movement of each Cl- ion into the stomach lumen by a K⁺.
• D)all of the above.

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