Question

How the stomach protect itself from the harmful hydrochloric acid secreted by gastric glands? ​

Answer 1

Answer:

In the stomach several mucosal defence mechanisms protect the stomach against hydrochloric acid and noxious agents. The pre-epithelial protection is made up by the mucus-bicarbonate barrier. Mucus and bicarbonate, secreted by mucus cells, create a pH gradient maintaining the epithelial cell surface at near neutral pH.

Explanation:

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Answer 2

HYDROCHLORIC ACID SECRETED BY GASTRIC GLANDS

• In the stomach several mucosal defence mechanism protect the stomach against hydrochloric acid and noxious agents.

• The pre-epithelial protection is made up by the mucus -bicarbonate barrier.
• Mucus and bicarbonate, secreted by mucus cells, create a pH gradient maintaining the epithelial cell surface at near neutral pH.
• Stomach protects itself from being digested by its own enzymes , or burnt by the corrosive hydrochloric acid , by secreting sticky, neutralising mucus that clings to the stomach walls.
• Both the cardiac and pyloric glands secrete mucus ,which coats the stomach and protect it from self-digestion by helping to dilute acids and enzymes.