Question

MALT constitutes what percent of the lymphoid tissue in the human body?

• A. 20%
• B. 70%
• C. 10%
• D. 50%

Answer 1

The correct option is D 50%

Lymphoid tissues are organized structures that support immune responses (reaction of an organism to foreign substances).

There are lymphoid tissues that are present in the epithelial lining of organ systems that come in contact with the external environment, like the mucosal lining of the respiratory, urogenital and digestive systems. This portion of the lymphatic system is known as ‘Mucosa-associated lymphoid tissue’ or MALT.

MALT consists of about 50% of the lymphoid tissue in the human body. Hence option d is correct.

Structurally these tissues are either loosely organised like lymphoid cells in the lamina propria of intestinal villi or well organised like tonsils, Peyer’s patches, and the appendix.

Figure : MALT