HCl is secreted in stomach to promote the activity of enzymes. Why does this HCl does not corrode the lining of the stomach?

Explanation

**Step-by-Step Solution:**

1. **Understanding HCl in the Stomach:** Hydrochloric acid (HCl) is secreted in the stomach to create an acidic environment that is essential for the activation and function of digestive enzymes.

2. **The Role of Mucus:** The stomach has specialized glands that secrete mucus. This mucus plays a crucial role in protecting the stomach lining from the corrosive effects of HCl.

3. **Mechanism of Protection:** The mucus forms a protective barrier on the stomach lining. It contains bicarbonate ions that help neutralize the acid, creating a less acidic environment at the surface of the stomach lining.

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