In the gastrointestinal tract the Meissner's plexus and the Auerbach's plexus occur respectively in the

Options

A. Submucosa and mucosa
B. Mucosa and muscularis external
C. Submucosa and muscularis external
D. Lamina propia and muscularis mucosa

Answer

To answer the question regarding the locations of Meissner's plexus and Auerbach's plexus in the gastrointestinal tract, we can break down the solution into clear steps:

### Step-by-Step Solution:

1. **Identify Meissner's Plexus Location**:
- Meissner's plexus, also known as the submucosal plexus, is located in the submucosa layer of the gastrointestinal tract. This plexus is responsible for regulating the function of the mucosa and controlling secretions.

2. **Identify Auerbach's Plexus Location**:
- Auerbach's plexus, also known as the myenteric plexus, is found between the inner circular and outer longitudinal layers of the muscularis externa. This plexus plays a crucial role in controlling gastrointestinal motility.

3. **Combine the Findings**:
- Based on the locations identified, Meissner's plexus is in the submucosa, and Auerbach's plexus is in the muscularis externa.

4. **Select the Correct Option**:
- Therefore, the correct answer to the question is that Meissner's plexus occurs in the submucosa and Auerbach's plexus occurs in the muscularis externa.

### Final Answer:
- The correct option is **Option 3**: Meissner's plexus is in the submucosa, and Auerbach's plexus is in the muscularis externa.

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