Mucosa-associated lymphoid tissues 2 Flashcards
1
Q
Where are Peyer’s patches located?
A
In the mucosa throughout the small intestine, particularly in the ileum.
2
Q
What are Peyer’s patches?
A
Specialised lymphoid tissues for collecting antigen present in the GI tract.
3
Q
What do Peyer’s patches comprise of?
A
Primary and secondary follicles located immediately beneath specialist epithelium known as follicular-associated epithelium. (or M-epithelial cells). They have T-zones which lie more deeply.
4
Q
What is the appendix?
A
Its part of the large intestine, associated with the caecum and thought to have a role in the immune system.
5
Q
How is the appendix similar to the tonsils?
A
They both have crypts, and like the tonsils, it is susceptible to infection.
