Across
- 2. dioxide what waste product do your lungs out hale called _________ ______
- 5. each alveoli has a mech like vessels that are called________________
- 8. the system that helps you breathe
- 9. this is where the oxygen you breathe gets observed and into the blood it goes
- 10. your chest muscles and your________ help you breathe
Down
- 1. the tube where the oxygen goes after you inhale
- 3. what does your body need to survive
- 4. your lungs are behind your _________
- 6. where does the respiratory system start when you inhale
- 7. what you call it when you inhale and outhale.