Respiratory System

2. A muscle that helps with breathing by contracting and relaxing to move air in and out.
4. The tubes that carry air in and out of the lungs
6. The primary organs for gas exchange, where oxygen is taken in and carbon dioxide is released.
7. The process of taking air into the lungs.
9. The area of the throat containing the vocal cords and used for breathing, swallowing, and talking.
11. The act or process of breathing.
14. This system, including the lungs and airways, facilitates gas exchange between the body and the environment.
17. An important organ, or. body part, for breathing and smelling.
18. Passageway connecting the nose and mouth to the windpipe.
20. The gas we need from the air to survive.

1. The process of taking in and expelling air during breathing.
3. The main tube that carries air to the lungs.
4. A tiny branch of air tubes in the lungs.
5. The opening between the vocal folds.
8. The process of exhaling or breathing out of the lungs.
10. A leaf-shaped flap in the throat that prevents food and water from entering the trachea and the lungs.
12. An organ in vertebrates through which food passes
13. The waste gas that is exhaled.
15. Air-filled spaces within the bones of the face, specifically around the nose
16. The opening through which food enters the body.
19. The mixture of gases we breathe.