Across
- 1. / structures that prevent backflow of blood
- 3. / gas carried by blood to body cells
- 7. / cells that fight infection
- 9. / tiny vessels where exchange happens
- 11. / organ that pumps blood around the body
- 12. / main artery leaving the heart
- 13. / lower chamber of the heart
- 15. / wall dividing the left and right sides of the heart
- 18. / blood vessels that carry blood to the heart
- 19. arteries / vessels that supply the heart muscle
Down
- 2. / blood vessels that carry blood away from the heart
- 4. / fatty substance that can block arteries
- 5. / liquid part of blood
- 6. / cells that carry oxygen
- 8. / blood components that help clotting
- 10. / upper chamber of the heart
- 11. / blockage of blood flow to the heart
- 14. / waste gas removed from the body
- 16. / liquid that transports substances around the body
- 17. / chest pain caused by reduced blood flow