Across
- 3. a web of these surround the air sac walls
- 4. these are at the end of the bronchioles; this is where oxygen enters the blood and carbon dioxide leaves the blood
- 5. when you breath, this gas builds up in your blood
- 6. these are small tubes that branch from the bronchi and go into the lungs
- 9. the cells of all multicellular organisms need this gas for energy
- 10. the job of this organ system is to carry gasses between the outside air and your blood
- 13. these are tiny, hairlike structures on cells in the lining of many parts of the respiratory system
Down
- 1. this sticky, thick fluid traps dust and germs from the air
- 2. the sound of your voice is the result of your breath making the vocal chords vibrate; vocal chords are stretched over this organ
- 3. this organ system works with the respiratory system; its blood picks up the oxygen and carries it to all your cells
- 6. the trachea leads to these 2 branches that go into the lungs
- 7. air enters your body through the mouth or this organ
- 8. when you hold your breath your brain sends a message to this organ and rib muscles telling them to breath
- 11. after air enters your body, it passes this organ; this is where air is warmed and moistened; then air goes to the larynx
- 12. this tube carries air from the larynx to the lungs