The Heart and Lungs

4. Responsible for catching and preventing dust and germs from entering the lungs
5. Region of the heart that pumps oxygenated blood to the body
11. Physical process where oxygen is brought into our bodies
12. The two branches that air travels into, that continually divide
13. Muscular organ that pumps blood through the blood vessels of the circulatory system
15. Region of the heart that pumps deoxygenated blood to the pulmoanry artery
17. Creates voice sounds when air is breathed in and out
19. Location of many branches of the bronchi
20. Small, thin air sacs at the end of the bronchi branches
21. Another entrance for air if your nasal cavity is blocked
23. The main artery carrying oxygenated blood to all parts of the body

1. Carries oxygenated blood from the lungs to the left atrium
2. Receives oxygenated blood from the lungs
3. Carries deoxygenated blood to the lungs
6. Process where carbon dioxide is sent out of our bodies
7. Collects incoming air from your nose and passes it downward toward your trachea
8. Smallest section of the bronchi, where the alveoli are located
9. Wall of muscle that tightens and draws air into the lungs
10. Area of the heart that receives deoxygenated blood from the vena cava
14. Carries air from the pharynx into the bronchi of the lungs
16. Carries deoxygenated blood from the body to the heart
18. Entrance for outside air into your respiratory system
22. Prevent the backflow of blood