Across
- 4. a process in which energy is released
- 6. liquid which is in blood
- 7. the process in which white blood cells destroy organisms
- 9. we breathe with
- 11. takes blood away from the heart
- 12. it is not blue, you fool :O
- 13. the subject we're studying
- 14. helps keep blood flowing in the right direction
- 15. the shape of a red blood cell
- 16. disorder of blood clotting
- 17. helps blood go clotty
Down
- 1. amount of chambers in the heart
- 2. red pigment
- 3. arteries branch out into these
- 5. hemoglobin and oxygen
- 8. our teacher B)
- 10. fish use these to breathe
- 14. takes blood to the heart
- 17. used to control someone's heartbeat artificially
- 18. hole in blood vessel