Peyer's patches are found in

Options

A. Lamina propria of ileum
B. submucosa of duodenum
C. Serosa of jejunum
D. Muscularis of stomach

Answer

**Step-by-Step Solution:**

1. **Understanding Peyer's Patches**: Peyer's patches are lymphoid tissues that play a crucial role in the immune system, particularly in the gut. They are involved in monitoring intestinal bacteria and preventing the growth of pathogenic bacteria.

2. **Location of Peyer's Patches**: Peyer's patches are specifically found in the ileum, which is the final part of the small intestine. The small intestine is divided into three parts: the duodenum, jejunum, and ileum.

3. **Function of Peyer's Patches**: The primary function of Peyer's patches is to facilitate the immune response. They help in the detection of foreign bacteria and monitor the growth of beneficial bacteria in the intestine. This is essential for maintaining a healthy gut flora and ensuring proper digestion.

4. **Structure of the Small Intestine**: The ileum, where Peyer's patches are located, is part of the intestinal mucosa layer. The mucosa layer consists of various components, including the lamina propria, which houses the Peyer's patches.

5. **Conclusion**: Therefore, the answer to the question is that Peyer's patches are found in the ileum of the small intestine.

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