Across
- 4. Makes blood cells red and carries oxygen in the cell
- 5. Carries carbon dioxide out the lungs
- 8. Holds the vocal cords
- 9. Process of blood flowing to lungs
- 10. A molecule made when ten percent of carbon dioxide binds to a hemogoblin
- 11. Alternative way of breathing
- 12. Folds to food and liquid from entering the larynx
- 13. Beginning of the respiratory system. Filters and makes air warm
- 15. Process of oxygen and carbon dioxide flowing into our lungs
- 17. Part of the brain that controls the rate of breathing
- 18. Small sacs where lungs and blood exchange carbon dioxide and oxygen
Down
- 1. Part of the brain that sends signals to muscles to help you breathe
- 2. Contracts to create an air vacuum and forces air into the lungs
- 3. Allows air to travel to epiglottis
- 6. Small blood vessels that cover the alveoli
- 7. Made in the bicarbonate buffer system where carbon dioxide bonds with water found in blood
- 10. Enzyme for carbonic acid
- 14. Carries air into lungs and alveoli
- 16. Inhales oxygen and exhales carbon dioxide