Respiratory system

4. the strong and flexible tissue in the trachea
6. The muscles between the ribs
10. when the muscles relax and air gets out of the nose and mouth
11. ability to pass oxygen into the blood from the air sacs of the lungs, and pass carbon dioxide back into the lungs from the blood.
13. The small moveable lid above the larnyx that prevents food and luids from entering the windpipe.
15. The protein inside red blood cells
16. The two large tubes that carry air from the windpipe to the lungs.

1. a group of organs that function to help you breathe inhaling the air in the current environment
2. The main air passages that takes air from the trachea after being inhaled.
3. the u-shaped tube that connects to the larnyx.
5. the two small muscles that have a moist covering, within the larynx
7. Lets air pass from the throat to the trachea and into the lungs
8. carries air, food and liquid from the nose and mouth
9. when cells obtain energy by burning glucose in the presence of oxygen.
12. when the diaphgram contracts and moves downwards.
14. when the lungs and the blood exchange oxygen and carbon dioxide. This occurs when you breathe in and out.