Describe how lymph nodes and organs the immune system fight pathogens.

The defense system of the human body is made up of entire organs and vessel systems like the lymph vessels, but also of individual cells and proteins. The inner and outer surfaces of the body are the first barriers against pathogens (germs). These surfaces include the skin and all mucous membranes, which form a kind of mechanical protective wall.

Several things support this protective wall:

The cough and sneeze reflex can also help to remove pathogens.

Hope this helps (:

white blood cells/lymphoctyes

lymph gets filtered by nodes and structures

germs collect in lymph nodes

the correct answer is b