Stomach Acid and Digestion
While the stomach is for digestion, its highly acidic environment serves as a powerful defence against infection.
Which acid is found in the stomach?
What is Stomach Acid and Digestion?
"Stomach acid (gastric acid) is a digestive fluid formed in the stomach that also acts as a barrier to infection."
Which statement accurately describes stomach acid defence at a GCSE level?
Why is the stomach part of the body's non-specific defence system?
Choose the best explanation: why is the stomach part of the body's non-specific defence system?
Select why is the stomach part of the body's non-specific defence system?
Chemical Destruction
Produces hydrochloric acid.
The acid is strong enough to kill most pathogens that enter via food.
It also kills pathogens trapped in mucus that are swallowed.
Stomach acid has a pH of approximately 2, which is strong enough to denature pathogen proteins.
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