Multiple Choice
Which of the following is an example of an infectious disease that is not a communicable disease?
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21. The Immune System
Introduction to the Immune System
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Where are Peyer's patches located in the human body?
A
In the lymph nodes
B
In the spleen
C
In the thymus
D
In the small intestine
Verified step by step guidance1
Peyer's patches are an important part of the immune system, specifically involved in monitoring intestinal bacteria and preventing the growth of pathogenic bacteria in the intestines.
To understand their location, consider the structure of the digestive system. The small intestine is divided into three parts: the duodenum, jejunum, and ileum.
Peyer's patches are primarily found in the ileum, which is the last part of the small intestine before it connects to the large intestine.
These patches are aggregates of lymphoid tissue and play a crucial role in the immune surveillance of the intestinal lumen and in facilitating the generation of the immune response within the gut.
By understanding the anatomy of the small intestine and the role of Peyer's patches, it becomes clear why they are located in the small intestine rather than in lymph nodes, spleen, or thymus.
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