The Circulatory system

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Across
  1. 2. Which organ pumps blood around the body?
  2. 4. When haemoglobin combines with oxygen from the lungs it becomes?
  3. 7. The measurement of the heart beats per minute
  4. 8. The volume of blood pumped out of the heart by each ventricle in on beat
  5. 9. The blood vessel that carries deoxygenated blood to the heart
  6. 10. The amount of blood expelled from the heart each minute
  7. 13. Blood that is low in oxygen and high in carbon dioxide
  8. 14. They prevent the back flow of blood
Down
  1. 1. Which blood vessel allows food and oxygen to diffuse to cells?
  2. 3. Which artery pumps blood to the lungs?
  3. 5. What is the name of the artery at the wrist used for measuring heart rate
  4. 6. Receives oxygenated blood from the vena cava
  5. 11. Which blood vessels has the highest blood pressure?
  6. 12. Blood that is high in oxygen but low in carbon dioxide