respiratory system
Across
- 2. any of the tiny blood vessels connecting the small arteries and veins
- 6. voice box
- 9. receives deoxygenated blood from the lungs
- 11. carry poor oxygenated blood back to the heart
- 12. receives oxygenated blood from the lungs
Down
- 1. at the end of each bronchiole
- 3. windpipe
- 4. receives blood from the (left or right) atrium
- 5. throat
- 7. while in the lungs branch into smaller and smaller tubes
- 8. a big flat muscle at the bottom of your chest cavity that helps with breathing
- 10. pumps blood to the lungs first back to the heart and then around the body