Respiratory System

3. The act or process of breathing.
4. The waste gas that is exhaled.
10. A tiny branch of air tubes in the lungs.
11. An important organ, or. body part, for breathing and smelling.
12. The area of the throat containing the vocal cords and used for breathing, swallowing, and talking.
15. The process of taking air into the lungs.
17. The opening through which food enters the body.
18. The tubes that carry air in and out of the lungs
19. This system, including the lungs and airways, facilitates gas exchange between the body and the environment.

1. The process of exhaling or breathing out of the lungs.
2. Passageway connecting the nose and mouth to the windpipe.
5. A leaf-shaped flap in the throat that prevents food and water from entering the trachea and the lungs.
6. The gas we need from the air to survive.
7. The mixture of gases we breathe.
8. The main tube that carries air to the lungs.
9. The opening between the vocal folds.
10. The process of taking in and expelling air during breathing.
13. An organ in vertebrates through which food passes
14. A muscle that helps with breathing by contracting and relaxing to move air in and out.
16. The primary organs for gas exchange, where oxygen is taken in and carbon dioxide is released.
20. Air-filled spaces within the bones of the face, specifically around the nose