Answered

What are Peyer's patches?

A. Small bundles of lymphoid tissue on the walls of the small intestine
B. A rash seen in certain chronic inflammatory diseases of the lymph nodes
C. A disorder of the lymph nodes in the upper left quadrant of the abdomen
D. A vaccine administered to prevent diphtheria, tetanus, and pertussis



Answer :

GinnyAnswer

Final answer:

Peyer's patches are lymphoid nodules in the small intestines that play a key role in immune responses by monitoring and fighting infections.


Explanation:

Peyer's patches are organized lymphoid nodules found in the small intestines, specifically in the ileum. They play a crucial role in immune responses against ingested substances by monitoring and fighting infections. Peyer's patches contain B lymphocytes in germinal centers and T lymphocytes in surrounding zones, providing a primary and secondary lymphoid organ within the gastrointestinal tract.


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