Across
- 3. Takes blood away from the heart
- 5. connects vein and artery
- 6. digest begins
- 9. System putting out CO2 and bringing in oxygen
- 12. sacs of lung tissue
- 14. forms scabs
- 15. Brings blood back to the heart
Down
- 1. Liquid part
- 2. Bhronchi to alveoli
- 4. connects mouth and stomach
- 7. Cells working together
- 8. lower heart
- 10. Tissues working together
- 11. digested food is absorbed
- 13. upper heart