We have stomach acid that has a pH of 2.0 or less. So why doesn’t it harm us by essentially “digesting” us? Mucus covers the stomach wall with a protective coating. We also have bicarbonate which neutralizes it and makes sure that the stomach wall itself is not damaged by the hydrochloric acid.
It’s in a part of our body with measures to make sure it stays in that part of the body and doesn’t harm anything else. Same principle applies to venom in animals.
Latest Answers