Which Is TRUE Regarding the Secretion of HCl in the Stomach

question 9

Multiple Choice

Which is TRUE regarding the secretion of HCl in the stomach?

• A) H⁺ is actively transported into the gastric lumen by ATPase pumps in the mucosal membrane.
• B) H⁺ is actively cotransported into the lumen by secondary active transporters coupled to K⁺.
• C) The pH of the blood leaving the area of the parietal cells is lower than the normal ECF value of 7.4.
• D) H⁺ diffuses passively from mucosal epithelial cells into the lumen of the stomach, following Cl^-.
• E) Cl^- and HCO₃^- are exchanged across the luminal membrane of epithelial cells via a passive transport protein.

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