Across
- 2. Clusters of tiny, thin-walled sacs where the exchange of oxygen and carbon dioxide takes place
- 4. A tube supported by C-shaped rings of cartilage
- 5. Lower chambers of the heart
- 10. Tubelike passageway used for food, liquid, and air
- 11. Irregularly shaped cell fragments that help clot blood
- 14. The flow of oxygen-rich blood to all of your organs and body tissues, except the heart and lungs
- 15. Upper chambers of the heart
- 18. Carry blood Away from the heart
- 19. A molecule that carries oxygen and carbon dioxide
Down
- 1. The flow of blood through the heart to lungs and back to the heart
- 3. The flow of blood to and from the tissue of the heart
- 6. Channels that carry blood throughout your body
- 7. Carry blood Back To the heart
- 8. The organ that controls blood flow through each section
- 9. The liquid part of blood-is mostly water
- 12. Masses of alveoli arranged in grapelike clusters
- 13. Connect arteries and veins
- 16. The airway where the vocal cords are attached
- 17. Two short tubes from the Trachea that carry into the lungs