<Tr> <Td> </Td> <Td> This section needs expansion . You can help by adding to it . (November 2010) </Td> </Tr> <P> The role of gastric acid in digestion was established in the 1820s and 1830s by William Beaumont on Alexis St. Martin, who, as a result of an accident, had a fistula (hole) in his stomach, which allowed Beaumont to observe the process of digestion and to extract gastric acid, verifying that acid played a crucial role in digestion . </P>

Where is hydrochloric acid stored in the body