Which organs are located in the pharynx, acting as a first line of defense against pathogens?
the spleen and the thymus
the adenoid and the thymus
the tonsils and the spleen
the tonsils and the adenoid
Answer please hurry
The tonsils are the “first line of defense” against potential respiratory pathogens. They contain specialized M cells that collect antigens produced by respiratory tract pathogens. The secondary lymphoid tissue within the tonsils functions like the same type of the tissue in lymph nodes.
