Across
- 4. inside nose contains mucus to keep out pathogens
- 6. connects throat and lungs
- 8. connects airway of mouth to nose
- 9. tiny hairs that filter pathogens out of airways
Down
- 1. has three lobes
- 2. muscle that helps lungs push out and pull in air
- 3. connects pharynx with stomach
- 5. passages that supply lungs with air
- 7. where exchange of CO2 and oxygen occurs
- 10. has two lobes