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2 Cards in this Set
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1st Line of Defense
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Helps prevent pathogens from entering the body.
These include: Skin that blocks pathogen Mucous membranes that release mucus and trap microbes. Cilia in the respiratory system that sweep out mucus with its trapped microbes. Stomach acid that kills germs that enter through the nose and mouse |
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2nd Line of Defense
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The second line of defence is a group of cells, tissues and organs that work together to protect the body. This is the immune system.
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