write the role of pH present in the stomach
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The pH of our stomach is critical to the digestion of many nutrients and acts as the first line of defense against harmful bacteria and viruses. The stomach is a reservoir of strong acid, with a much lower pH than in any other part of our digestive system.
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With a pH between 1 and 3, gastric acid plays a key role in digestion of proteins by activating digestive enzymes, which together break down the long chains of amino acids of proteins. Gastric acid is regulated in feedback systems to increase production when needed, such as after a meal.
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