Across
- 2. Another word for widepipe.
- 6. A blood vessel that carries blood back to the heart.
- 8. A blood vessel that carries blood away from the heart.
- 9. Substance that causes disease,
- 11. Ability of the body to resist disease.
- 12. A serious disease caused by cells.
- 14. The red liquid that flows through the body.
Down
- 1. To breathe in.
- 3. The smallest blood vessel.
- 4. Cancer,cold
- 5. Muscular organ that pumps blood throughout the body.
- 7. Two main branches of the widepipe.
- 10. One of the two organs that people use to breathe air.
- 13. To breathe out.