The Heart

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Across
  1. 1. Prevent backflow of blood (so it only flows in one direction).
  2. 3. The blood vessel that carries blood away from the heart.
  3. 5. The small chambers in the top half of the heart.
  4. 8. These carry oxygen in your blood.
  5. 9. The large artery that takes blood away from the heart towards the body.
  6. 10. The large vein that brings blood back to the heart from the body.
Down
  1. 2. The larger chambers in the bottom half of the heart.
  2. 4. Tiny blood vessels with walls so thin that gases and nutrients can be exchanged between the blood and cells.
  3. 6. A specific artery and vein - one runs from the heart to the lungs and one goes back to the heart from the lungs.
  4. 7. The blood vessel that carries blood back to the heart.