Brunner's gland are found in which of the following layers

Options

A. Submucosa of stomach
B. Submucosa of duodenum
C. Mucosa of oesophagus
D. Mucosa of ileum

Answer

**Step-by-Step Solution:**

1. **Understanding the Question:**
The question asks about the location of Brunner's glands within the layers of the digestive system. We need to identify which layer contains these glands from the given options.

2. **Identifying the Layers of the Alimentary Canal:**
The alimentary canal has four basic layers:
- **Serosa:** The outermost layer.
- **Muscularis externa:** The layer responsible for peristalsis, consisting of two muscle layers (longitudinal and circular).
- **Submucosa:** The layer that contains blood vessels, lymph vessels, and glands.
- **Mucosa:** The innermost layer that includes villi and other structures for absorption.

3. **Analyzing the Options:**
The options provided are:
- Submucosa of the stomach
- Submucosa of the uterus
- Mucosa of the esophagus
- Mucosa of the ileum

4. **Locating Brunner's Glands:**
Brunner's glands are specifically known to be located in the submucosa of the duodenum (the first part of the small intestine). They are mucous glands that help in neutralizing stomach acid and providing an alkaline environment for the enzymes to function.

5. **Eliminating Incorrect Options:**
- **Submucosa of the stomach:** Incorrect, as Brunner's glands are not found here.
- **Submucosa of the uterus:** Incorrect, as this is not related to the digestive system.
- **Mucosa of the esophagus:** Incorrect, as Brunner's glands are not present in the esophagus.
- **Mucosa of the ileum:** Incorrect, as Brunner's glands are not found here either.

6. **Conclusion:**
The correct answer is that Brunner's glands are located in the **submucosa of the duodenum**.

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