Across
- 2. Stops you bleeding.
- 4. Arteries go in what direction?
- 5. The arteries that supply the heart with oxygen.
- 7. An open space in a building.
- 9. Different way of saying circulatory.
- 12. The two at the bottom.
- 13. The vein and artery that are wrong.
- 15. Blue blood.
- 16. Three parts.
- 18. Two parts.
- 19. The center-piece.
Down
- 1. The largest of its kind.
- 3. Red blood.
- 5. Policing the heart.
- 6. Not enough iron in the blood.
- 8. Big and scared of the heart.
- 10. Creator of Steam (gaming platform, not heated water).
- 11. Thicker than its opposite.
- 12. Towards the heart.
- 14. How many hearts do you have?
- 17. Partly moon.