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​B3: Quiz 4
1)
a) How does skin reduce the chances of an individual becoming infected with a pathogen?
b) Describe what happens when we cut ourselves and why this is useful for preventing infections.
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2) Explain how the trachea prevents pathogens from entering the body. Include a description of the structures in the trachea.
 
3) Describe how the stomach prevents an individual from being infected with a pathogen.
 
4) How does the eye prevent infections from pathogens?
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