Question

The lymphoid organ located within the lining of respiratory, digestive and urogenital tract is :

• A. \( \text{GEAC} \)
• B. \( \text{MALT} \)
• C. \( \text{NACO} \)
• D. \( \text{RCH} \)

Hint:

Remember that "mucosa-associated" directly indicates the location of this lymphoid tissue within the linings of major body tracts that are exposed to the external environment.

Answer 1

The Correct Option is B

The lymphoid tissue associated with the mucosal lining of the respiratory, digestive, and urogenital tracts is called Mucosa-Associated Lymphoid Tissue (MALT). MALT is a crucial component of the immune system, providing the first line of defense against pathogens entering these tracts. It consists of various lymphoid aggregates, such as Peyer's patches in the small intestine, tonsils in the pharynx, and lymphoid follicles in the lamina propria of mucous membranes. The other options are not lymphoid organs located within these linings in the same way as MALT: \begin{itemize} \item GEAC is not a recognized immunological term in this context. \item NACO refers to the National AIDS Control Organisation in India, which is related to HIV/AIDS control programs, not a general lymphoid organ. \item RCH typically refers to Reproductive and Child Health programs, not a specific lymphoid organ. \end{itemize} Therefore, MALT is the correct answer.