Question

Your stomach contains leynt hydrochloric acid, you don't expicence any burning sensation why?
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Answer 1

Second, HCl in the lumen doesnt digest the mucosa because goblet cells in the mucosa secrete large quantities of protective mucus that line the mucosal surface. Basic electrolytes, such as HCO3-, trapped inside the layer of mucus neutralize any HCl that penetrates the mucus.