In the empty stomach, mucosal folds appear, They are called

Options

A. Rugae
B. Villi
C. Alveoli
D. None of the above

Answer

**Step-by-Step Solution:**

1. **Understanding the Structure of the Stomach:**
- The stomach has a lining that can adapt based on its contents. When the stomach is empty, the lining folds inwards.

2. **Identifying the Folds:**
- These folds in the stomach lining are specifically known as "rugae." They allow the stomach to expand when food enters.

3. **Function of Rugae:**
- The presence of rugae increases the elasticity of the stomach, enabling it to accommodate larger volumes of food as it is ingested.

4. **Differentiating from Other Options:**
- The other options provided in the question are:
- **B-Villi:** These are finger-like projections found in the small intestine that increase the surface area for absorption of nutrients.
- **C-Alveoli:** These are tiny air sacs in the lungs that facilitate gas exchange.
- **D-Narotiaba:** This term does not relate to any known anatomical structure in the context of digestion or absorption.

5. **Conclusion:**
- Based on the definitions and functions of the structures mentioned, the correct answer to the question is **A-Rugae**.

**Final Answer:**
The mucosal folds that appear in an empty stomach are called **Rugae** (Option A).

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