Respiratory System

5. responsible for carrying air, food and fluid down from the nose and mouth.
7. a spongy, air-filled organ located on either side of the chest
8. muscles that present within the rib cage
9. keeps joint motion fluid by coating the surfaces of the bones in our joints and by cushioning bones against impact.
11. any of the minute branches into which a bronchus divides.
12. long tube that connects your larynx (voice box) to your bronchi
13. breathing air out
15. wo bands of smooth muscle tissue found in the larynx
16. protein found in the red blood cells that carries oxygen in your body and gives blood its red colour.

1. the process by which organisms use oxygen to break down food molecules to get chemical energy for cell functions.
2. passive movement of molecules or particles
3. prevents food and drink from entering your windpipe.
4. is another word for a voice box
6. breathing air in
10. where the lungs and the blood exchange oxygen and carbon dioxide during the process of breathing in and breathing out.
14. two large tubes that carry air from your windpipe to your lungs