Hydrochloric acid (HCl) in the stomach aids digestion by denaturing proteins and activating enzymes like pepsin.
Hydrochloric acid (HCl) in the stomach plays a crucial role in aiding digestion by denaturing food proteins and activating enzymes like pepsin. This acid is secreted by glands in the stomach lining, and its pH helps in the breakdown of protein molecules. Parietal cells in the stomach wall actively transport H+ ions to produce gastric juice with a low pH, essential for digestion.
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