Across
- 1. VESSELS- Network of tubes that carry blood
- 3. DIOXIDE- Gas removed from the body
- 5. Blood vessels that carry blood back to the heart
- 7. BLOOD CELLS- Cells that help fight infection
- 9. Upper chambers of the heart
- 11. BLOOD CELLS- Cells that carry oxygen
- 12. Small cells that help blood clot
- 13. Structures that prevent backflow of blood
- 15. The flow of blood around the body
- 16. The liquid part of blood
Down
- 1. The fluid that carries oxygen and nutrients
- 2. Tiny blood vessels where exchange of substances occurs
- 4. Organ that oxygenates blood
- 5. Lower chambers of the heart
- 6. The main organ that pumps blood
- 8. Gas carried by red blood cells
- 10. Blood vessels that carry oxygen-rich blood away from the heart
- 14. The beating of the heart felt in arteries