Across
- 2. Helps regulate blood flow
- 3. Cell fragments involved in blood clotting
- 4. Largest artery in the body
- 6. Carries oxygen-poor blood back to the heart
- 8. Relating to the lungs; type of circulation
- 11. Fluid that transports oxygen and nutrients
- 14. Part of the heart that receives blood
- 15. blood cell) Type of cell that carries oxygen
- 16. Related to veins
- 17. The outer layer of a blood vessel
- 18. Smallest blood vessels where exchange occurs
- 19. Smallest branches of arteries
Down
- 1. The organ that pumps blood
- 3. The liquid component of blood
- 5. Blood vessels that carry blood away from the heart
- 7. Type of circulation that serves the body
- 9. The muscular layer of the heart
- 10. blood cell) Contains cells that fight infection
- 12. Blood vessels that return blood to the heart
- 13. The system comprising the heart and blood vessels