Auerbach's plexus is present in

Options

A. Submucosa
B. Between mucosa and submucosa
C. Between circular and longitudinal muscles of muscularis interne
D. Between circular and longitudinal muscles of muscularis extema

Answer

To answer the question "Auerbach's plexus is present in," we can follow these steps:

### Step 1: Understand Auerbach's Plexus
Auerbach's plexus, also known as the myenteric plexus, is a part of the enteric nervous system. It plays a crucial role in regulating gastrointestinal (GI) motility and secretion.

### Step 2: Identify the Location
Auerbach's plexus is located between the muscle layers of the gastrointestinal tract. Specifically, it lies between the circular and longitudinal muscle layers of the muscularis externa.

### Step 3: Review the Options
The options provided are:
1. Submucosa
2. Between mucosa and submucosa
3. Between circular and longitudinal muscles of muscularis internae
4. Between circular and longitudinal muscles of muscularis externa

### Step 4: Analyze the Options
- The submucosa is where the Meissner's plexus (inner plexus) is located, not Auerbach's.
- The area between the mucosa and submucosa does not contain Auerbach's plexus.
- The muscularis internae is not the correct layer for Auerbach's plexus.
- The muscularis externa is the correct location for Auerbach's plexus.

### Step 5: Conclusion
Based on the analysis, Auerbach's plexus is present between the circular and longitudinal muscles of the muscularis externa.

### Final Answer
Auerbach's plexus is present between the circular and longitudinal muscles of muscularis externa.

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