Across
- 2. Flaps to keep blood moving in one direction
- 4. Carries the oxygen in a red blood cell
- 5. Chamber where blood first enters the heart
- 7. It pumps blood through your body
- 8. Helps blood clot
- 9. Blood with no oxygen in it
- 10. Tiniest blood vessels
Down
- 1. Keeping conditions constant in the body
- 2. Chamber from which blood leaves the heart
- 3. Carries blood towards the heart
- 6. Blood vessel going away from the heart
- 8. The liquid part of blood