Question

The term "MALT" in immune system includes?

• A. Secondary lymphoid tissue or peripheral lymphoid tissue
• B. Primary and secondary lymphoid organs
• C. Lymphatic nodules in the intestine, appendix and caecum
• D. Lymph nodes present in joints

Answer 1

The correct option is A Secondary lymphoid tissue or peripheral lymphoid tissue

MALT is Mucosa Associated Lymphoid Tissue, it is present diffused in the submucosal layer of the skin, the gastrointestinal tract, thyroid, nasopharangeal tract etc. The major types of Lymphocytes included in MALT are the B cells and T cells, intestinal lymphoid tissue contains M cells. These along with the lymph nodes forms the peripheral lymphoid tissue. Primary lymphoid organ consist of Thymus and Bursa of Fibricius (in birds)

So, the correct answer is 'Secondary lymphoid tissue or peripheral lymphoid tissue'