Across
- 1. traps pathogens in your nose and keeps them from getting into your respiratory system
- 3. stomach ______ kills most pathogens in your digestive system
- 6. the skin's _______ block pathogens. Sweat kills some of them
- 7. traps pathogens that enter your ears
Down
- 2. chemicals in ____ kill pathogens that enter your mouth
- 4. along breathing passage keep pathogens out of your lungs
- 5. kill and wash away pathogens that enter your eyes