22. The acid in the stomach is HCl. The Cl- of the HCl originates from the extra

Question

22. The acid in the stomach is HCl. The Cl- of the HCl originates from the extracellular fluid, and it is transported across the epithelium of the stomach by a process known as transcytosis, which means that it enters into the epithelial cells before being exported out again. Entry into the epithelial cells is mediated by __________ located on the basolateral membrane, and export into the lumen of the stomach is mediated by ______________________ located on the apical membrane.

A. Cl-,HCO3 exchangers; Cl- channels

C. Cl- channels; Cl- channels

B. Cl- channels; Cl-,HCO3 exchangers

D. Cl-,HCO3 exchangers; Cl-,HCO3 exchangers

Explanation / Answer

Answer is option A. The Cl-, HCO3 exchanger and export into the stomach is mediated by the chloride channels.

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