Across
- 1. Allows movement in only one direction.
- 5. Large blood vessels that receive oxygenated blood.
- 7. A partition separating two chambers.
- 9. Located in the bottom left portion of the heart.
- 12. Responsible for pumping oxygen.
- 14. Small tubes
- 15. A large vein carrying deoxygenated blood to the heart.
- 16. The main artery of the body.
- 17. It transfers blood to other areas of the heart.
- 18. Branches in which bronchus divides.
Down
- 2. A small cavity
- 3. Rings in the trachea
- 4. It carrys blood form the right ventricle to the to the heart then to he heart for oxygenation.
- 6. A tube that has rings.
- 8. Cavity behind the nose and mouth.
- 10. Deoxygenated blood enters through there.
- 11. When swallowing it covers the opening of the wind pipe.
- 13. Vibrate to produce voice