Which of the following parts of the alimentary canal helps in providing immunity ?

Options

A. Auerbach's Plexus
B. Meissner's Plexus
C. Peyer's Patches
D. Brunner's glands

Answer

To solve the question regarding which part of the alimentary canal helps in providing immunity, we will analyze each option provided:

1. **Understand the options:**
- **A. Orbach's plexus**: This is a network of nerves in the gastrointestinal tract that helps regulate digestive functions but does not play a direct role in immunity.
- **B. Meissner's plexus**: Similar to Orbach's plexus, this is also involved in the regulation of digestive processes and does not contribute to immunity.
- **C. Peyer's patches**: These are specialized lymphoid tissues located in the mucous membrane of the small intestine. They play a crucial role in the immune response by monitoring intestinal bacteria and preventing the growth of pathogenic bacteria in the intestines.
- **D. Brunner's glands**: These glands are found in the duodenum and secrete an alkaline fluid that protects the intestinal lining from stomach acid. While they have a protective function, they do not directly provide immunity.

2. **Identify the correct answer:**
- Among the options, **C. Peyer's patches** is the only structure that is specifically involved in providing immunity by acting as a site for immune responses against pathogens in the gut.

3. **Conclusion:**
- Therefore, the part of the alimentary canal that helps in providing immunity is **C. Peyer's patches**.