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Physical lines of defense include

1. skin, cielia, and mucous membranes.

2. hair.

3. nails.

4. teeth.

5. tears.

6. saliva.

7. stomach acid.

8. urine flow.

9. sweat.

10. inflammatory response.

Did you know?

Did you know that our body has multiple physical lines of defense to protect us from harmful pathogens? These include the skin, cilia, and mucous membranes, which form a barrier to prevent pathogens from entering our body. Additionally, our hair acts as a protective layer, especially in the nose and ears, helping to trap dust and other particles that may carry pathogens. Nails, although seemingly insignificant, actually play a role in our defense system by acting as a shield for our fingertips and preventing pathogens from entering through small cuts or wounds. Lastly, our teeth not only help us chew food, but they also act as a barrier against pathogens, preventing them from entering through our oral cavity. It's amazing how our body has these built-in defenses to keep us healthy and protect us from potential threats!