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To protect the lining of the stomach. - Mucus or Gastric mucus is a gel barrier secreted by epithelial cells & glandular cells in the stomach wall.
- It acts as a part of the barrier that protects the stomach wall from the acid and digestive enzymes within the stomach lumen.
- This barrier is also made up of bicarbonate secretion & the epithelial cells themselves, which are tightly joined together.
- Together these components prevent the stomach from effectively digesting itself.
- HCL: converts the medium of food from alkali to acidic that also enables pepsin to do its work.
- Mucus: protects the inner lining of the stomach from HCL.
- Pepsin: helps in breaking down or digestion of protein in the stomach.
- Hydrochloric acid helps in the functionality of pepsin at the same time kills bacteria and mucus.
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