Across
- 4. A red fluid
- 6. A component of blood that carries nutrients
- 9. An upper chamber of the heart
- 10. Windpipe
- 13. A cell in blood that carries oxygen
- 15. The part of the lung where oxygen goes into the blood
Down
- 1. You have two _____
- 2. The final portion of the heart
- 3. The back of the mouth
- 5. The voice box
- 7. A cell in blood that fights disease
- 8. The vessel that carries blood from the heart
- 11. These come off the trachea
- 12. The vessel that carries blood to the heart
- 14. You're not a mouth-breather, you're a ____-breather