Describe 2 ways in which the body prevents entry of microorganisms into the body
-acid in the stomach kills any pathogens-skin acts as a physical barrier to pathogens-hair in the nose and ears trap any pathogens -saliva & mucous trap pathogens. The bronchi have villi that help move pathogens trapped in mucous out of the lungs. This can either be coughed up, or swallowed
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