Across
- 4. Lets air in and out of the lungs
- 9. Beginning of the respiratory system. Filters and makes air warm
- 10. Allows air to travel to epiglottis
- 11. Main part of respiratory system. Inhales oxygen and exhales carbon dioxide
Down
- 1. Folds to food and liquid from entering the larynx
- 2. Carries carbon dioxide out the lungs
- 3. Contracts to create an air vacuum and forces air into the lungs
- 5. Carries air into lungs and alveoli
- 6. Alternative way of breathing
- 7. Small sacs where lungs and blood exchange carbon dioxide and oxygen
- 8. Prevents food of going into airways