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Simply, it's because of the mucous layer around the stomach, that prevents the strong acid, Hcl to hurt our stomach. Not only this, if there were no mucous, the Hcl would digest the protein present in the epithelial cells, so the stomach itself would get digested. So the main protagonist here is the mucous layer.


Our stomachs are lined with a special mucal layer which protects the organ from its own secretions. People with stomach ulcers have a hole in this layer, allowing the acid to get to the skin underneath. HCl is present in our stomach to aid digestion - especially with dismantaling the bolus (food) coming from the oesophagus. The HCl separates the larger bolus ...


Goblet cells. These are specialized epithelial cells whose job it is to produce mucins. Mucous role is not only important in protecting the epithelium of the digestive tract from HCl, it is also a very important substance in the innate immune system, acting as a barrier defense to trap pathogens and/or prevent them from breaching the epithelium and gaining ...

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