Across
- 1. What you breathe
- 4. A hollow tube surrounded by cartilage rings
- 5. The right lung has three ________
- 6. Tiny flap that prevents food from entering the trachea
- 8. C shaped rings that outline the trachea are made up of _______
- 9. Exchange of CO2 and 02 in the alveoli is due to _______
- 10. Muscle located under the lungs, involved in breathing
- 13. Hollow tubes that branch out of the trachea
- 14. Two flaps of cartilage that produce sound
- 16. Carry air directly to the alveoli
- 17. Collapsed lung
- 18. The trachea is lined up with _______ epithelium
- 20. Part of the brain that controls breathing
- 21. Muscle located between ribs, involved in breathing
- 22. Common passageway for both food and air
Down
- 1. Clusters of air sacs at the end of bronchioles
- 2. The break down of glucose which causes energy
- 3. Gas that effects the rate of your breathing
- 6. During ________ the diaphragm and intercostal muscles relax
- 7. The alveoli are lined up with ________ epithelium
- 11. Lack of oxygen in the tissues
- 12. Artery leading to the lungs
- 15. Respiratory organs
- 19. Mainly elastic connective tissue that allows the lungs to recoil passively as we exhale
- 21. During ________ the diaphragm and intercostal muscles contract