Across
- 2. Where does the exchange of oxygen and carbon dioxide happen?
- 4. What carries blood away from the heart?
- 6. What is the passageway for air to get to your lungs?
- 7. How many chambers of the heart are there?
- 9. The function of the respiratory system is to supply blood with what?
- 10. What is the effect of blood blocked from the brain?
Down
- 1. What muscle contracts and relaxes that sit under your lungs?
- 3. what is the organ that makes the lub-dub sound?
- 5. What carries blood to the heart?
- 8. What are two tubes that branch from the trachea called?