Across
- 2. carry blood away from the heart
- 4. separates the left and right side of the heart
- 7. low-oxygen blood
- 8. transports oxygenated blood from heart to body
- 9. lower chamber of the heart
- 10. clots the blood
- 11. upper chamber of the heart
- 12. carries blood towards the heart
- 13. flows through blood vessels
Down
- 1. high-oxygen blood
- 3. organ that pumps blood around the body
- 5. wide in veins, narrow in arteries
- 6. connect arteries and veins
- 11. fights infection
- 12. prevents backflow in veins