Question

What is the body's first line of defense against pathogens?

Question 2 options:

white blood cells

red blood cells

lymph nodes

mucous membranes

Answer 1

The body's first line of defense against pathogens is **mucous membranes**. They provide a barrier that helps to trap and prevent pathogens from entering the body. While white blood cells play a crucial role in the immune response, they are part of the body's second line of defense.