Wall of stomach is protected against not possible

Options

A. Epidermal layer
B. Mesodermal layer
C. Mucus layer
D. Muscular layer

Answer

### Step-by-Step Solution:

1. **Understanding the Stomach's Environment**: The stomach has a highly acidic environment due to the secretion of hydrochloric acid (HCl). This acid plays a crucial role in digestion but poses a risk to the stomach wall itself.

2. **Identifying the Threats**: The stomach wall is at risk from two main factors:
- **Hydrochloric Acid (HCl)**: This strong acid can potentially damage the stomach lining.
- **Digestive Enzymes**: Enzymes such as pepsin are secreted to break down proteins, and they can also digest the stomach tissue if not properly regulated.

3. **Protection Mechanism**: To protect itself from these harmful substances, the stomach has a protective mechanism:
- **Mucous Layer**: The stomach wall is lined with a thick layer of mucus. This mucus serves as a barrier that protects the stomach lining from the corrosive effects of HCl and the digestive enzymes.

4. **Conclusion**: Therefore, the wall of the stomach is protected against the damaging effects of hydrochloric acid and digestive enzymes primarily by the mucous layer.

### Final Answer:
The wall of the stomach is protected against damage by hydrochloric acid and digestive enzymes through the presence of a mucous layer.

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