Across
- 3. Lower chamber of the heart
- 4. A tube that connects the larnyx to the lungs
- 7. The passage from the mouth to the larynx and esophagus
- 9. the exchange of oxygen and carbon dioxide between livng cells and their environment
- 11. A collection of organs that transport blood throughout the body
- 13. the muscle that moves down when you inhale
Down
- 1. collection of organs whose primary function is to take in oxygen and expel carbon dioxide
- 2. Flaplike structures and is found between the atria and ventricles
- 5. A tiny blood vessel that allows exchanges between body cells and blood
- 6. pressure The force that blood exerts on the walls of the arteries
- 8. Someting that carries blood to te heart
- 10. The fluid that is a part of blood
- 12. Upper chamber of the heart
- 14. A organ that is made mostly of caridac muscle tissue