What parts of the lymphatic system are used as filters to catch bacteria in the inhaled air?

The lymphatic system uses lymph nodes as key filters to catch bacteria and other pathogens. These nodes are strategically located throughout the body, including in areas like the neck, armpits, and groin. When air is inhaled, pathogens can enter the respiratory tract, and lymphatic tissues such as the tonsils and adenoids also play a role in filtering these invaders before they can cause harm.