Across
- 2. hairlike structures that help move the mucous layer that lines the airways pushing trapped particles toward the esophagus
- 4. facial structure through which air enters
- 6. process in which cells use oxygen and nutrients to produce energy, water, and carbon dioxide
- 7. the process of breathing
- 8. voice box
- 9. the exchange of oxygen and carbon dioxide between the lungs and bloodstream
- 11. the system in the body that is responsible for taking in oxygen and removing carbon dioxide
- 14. (windpipe) a tube extending from the larynx to the center of the chest
- 15. the process of breathing in air
- 17. smaller bronchi
- 19. cavities in the skull that surround the nasal area
Down
- 1. a special leaflike piece of cartilage, closes the opening of the larynx during swallowing
- 3. the exchange of carbon dioxide and oxygen between the tissue cells and the bloodstream
- 5. the place where the air from the trachea is carried to the lungs
- 10. throat
- 12. process in which the diaphragm contract and enlarge so that air can make its way into the alveoli, where the exchange of gases takes place
- 13. the diaphragm and intercostal muscles relax and air is forced out of the lungs and air passages
- 16. tiny air sacs in the lungs where the exchange of oxygen and carbon dioxide takes place
- 18. organs in the chest that allows the body to take in oxygen
- 20. Cavities two hollow spaces in the nose