All of the following are examples of mucosa associated lymphoid tissue exceptAAppendixBPeyer’s patchesCTonsilsDLiver
Question
All of the following are examples of mucosa associated lymphoid tissue except
- A. Appendix
- B. Peyer’s patches
- C. Tonsils
- D. Liver
Solution
The correct answer is D. Liver.
Mucosa-associated lymphoid tissue (MALT) is a diffuse system of small concentrations of lymphoid tissue found in various submucosal membrane sites of the body, such as the gastrointestinal tract, nasopharynx, thyroid, breast, lung, salivary glands, eye, and skin. MALT is populated by lymphocytes such as T cells and B cells, as well as plasma cells and macrophages, each of which is well situated to encounter antigens passing through the mucosal epithelium.
In the context of the question, the appendix, Peyer’s patches, and tonsils are all examples of MALT. However, the liver is not considered a part of this system. The liver does play a role in the immune system, but it is not a site of lymphoid tissue and therefore is not classified as MALT.
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