system protect the body against pathogens.
![subject](/tpl/images/cats/biologiya.png)
Identify how the physical barriers of the immune
system protect the body against pathogens.
Check all that apply.
•your nose produces oil to keep pathogens
from entering the body through your nose
•skin contains tightly packed cells
•skin is tough, flexible, and waterproof
•your cough when a pathogen enters your
mouth
•you sneeze when a pathogen enters your
nose
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Identify how the physical barriers of the immune
system protect the body against pathogens.
system protect the body against pathogens.
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