Across
- 2. Every cell in our body needs a constant supply of this
- 4. Tiny air sacs with extremely thin walls
- 5. The process in which the body takes in oxygen and removes carbon dioxide
- 6. Common passage for air to the trachea
- 7. Air movement from the atmosphere into the lungs
- 8. Exhaled when oxygen is inhaled
- 11. Microscopic hairs covering the inner lining of air passages
- 13. Tiny vessels carrying blood
- 14. Located between the pharynx and the trachea
- 15. Hollow tube strengthened and kept open by rings of cartilage
Down
- 1. Split in two that lead to the right and left lungs
- 3. Air movement from the lungs to the atmosphere
- 5. Facilitates the exchange of gases between the air and our blood
- 9. A number of tiny branches within each lung
- 10. Dome-shaped muscle at the base of the lungs
- 12. The process that moves air in and out of the lungs