Respiratory system

2. a muscle found below the lungs that assists with breathing
4. this is responsible for drawing air into the body
6. this body system breaks down food so that glucose can be available to cells
8. during this process the ribcage moves down creating less space in the lungs
11. a gas that is produced in the body as a waste product
13. during this process the ribcage moves up and out and the diaphragm contracts
15. thin air sacs that allow exchange of gases
16. two tubes that form branches into the lungs
17. this is found in the respiratory system to trap dust and pathogens
18. these are spongy organs which fill with air

1. the organelles responsible for releasing energy
3. tiny blood vessels that exchange gases with the lungs
5. an activity that will increase the breathing rate
7. this structure is also known as the throat
9. this structure contains vocal cords
10. this tube transports air from the nose to the lungs
12. this gas combines with glucose from our food so that we have energy
14. this system controls our breathing so we do not need to think about doing it