Duodenal glands / Brunner's glands are present in

Options

A. Submucosa
B. Mucosa
C. Muscularis
D. Serosa

Answer

**Step-by-Step Solution:**

1. **Understanding the Layers of the Alimentary Canal:** The alimentary canal consists of four layers:
- **Serosa (outermost layer)**
- **Muscularis**
- **Submucosa**
- **Mucosa (innermost layer)**

2. **Identifying the Location of Brunner's Glands:** Brunner's glands, also known as duodenal glands, are specifically located in the submucosa layer of the duodenum, which is the first part of the small intestine.

3. **Function of Brunner's Glands:** These glands secrete alkaline mucus that helps to neutralize gastric acid in the chyme coming from the stomach, providing an optimal pH for the action of intestinal enzymes.

4. **Conclusion:** Therefore, Brunner's glands are present in the submucosa of the duodenum.

**Final Answer:** Brunner's glands are present in the submucosa of the duodenum.

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