48.8k views
3 votes
How do breathing passages help keep pathogens out of the body?

Phagocytes in the breathing passages destroy pathogens.

They produce antibodies that kill pathogens.

Chemicals kill some pathogens.

Mucus and cilia trap pathogens.

User Ed Staub
by
7.3k points

1 Answer

2 votes

D. Muscus and cilia trap pathogens

have a good day!

User Moot
by
7.4k points