Across
- 4. is the lower chamber
- 6. blood cells are the largest type of blood cells
- 8. carry blood back into the heart
- 10. is carries around the body by the cardiovascular system
- 11. use for exchange gas
- 13. is the upper chamber
- 14. is a waste substance made in the liver
- 16. is another name for body's transportation system
Down
- 1. carry blood away from the heart
- 2. pump blood around the body
- 3. blood cells are also calls erythrocytes
- 5. is produce by respiration in the body's cells
- 7. is the protein that carries oxygen
- 9. made red blood cells look bright red
- 12. is mostly water with other dissolved substances
- 15. are important for blood clotting