RESPIRATION AND BREATHING

2. The _______ of chest cavity increase during inspiration.
7. Is red because it has iron in it.
9. Keeps the trachea open and prevent it collapsing.
10. Contracts (pull) during inspiration.
13. Respiration is a ______ process that happens in living cells.
14. The plural form of 'bronchus'.
15. Turns cloudy with carbon dioxide.
21. Process of air particles moving from alveoli into capillaries and vice versa.
22. During respiration, _____ molecule of glucose combines with six molecules of oxygen to produce six molecules of water and six molecules of carbon dioxide. It took me so much energy to type this long description but I don't mind.
23. Another name for 'air sacs'.
24. Name shared by two students in this class.

1. Intercostal muscles _______ during inspiration.
3. The site of respiration.
4. Red blood cell does not have this.
5. The type of respiration that uses oxygen.
6. Alveoli is only ____ cell thick.
8. Give you your beautiful voice.
11. They surround alveoli for gas exchange to happen.
12. Alveoli has ____ surface area.
16. It's sometimes called the windpipe.
17. ______ air contains more carbon dioxide.
18. The bike on page 77 is going at ____ six miles per hour.
19. Apart from water and carbon dioxide, ______ is also released in respiration.
20. There is a picture of a _____ on page 140 of your Textbook.