Across
- 2. the number of chambers in a fish heart
- 5. the largest vein of the body
- 10. the blood transportation system
- 14. blood with carbon dioxide molecules
- 15. the greek word for blood vessels
- 17. the number of chambers in an amphibian heart
- 18. particles that stop blood loss, scabs
- 21. the small organs that carry blood
- 22. cells that hold oxygen/carbon dioxide
Down
- 1. the largest artery of the body
- 3. blood with oxygen molecules
- 4. blood vessels that go back to the heart
- 6. gas exchange happens here
- 7. the cells of your immune system
- 8. the fluid that circulations the body
- 9. blood vessels that always go away from the heart
- 11. the number of chambers in a mammal heart
- 12. the hollow muscle that squeezes to pump blood
- 13. holds blood in specific chambers of the heart
- 16. the greek word for heart
- 18. the fluid part of blood
- 19. the largest vein that comes from the head
- 20. the thickest part of the heart