The Heart

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Across
  1. 1. tubes which carry blood
  2. 3. organ which pumps blood around the body
  3. 8. system the heart and blood vessels make up
  4. 10. bottom chambers of the heart
  5. 12. type of blood cell that fights infections
Down
  1. 2. tool used by doctors to measure heart rate
  2. 4. type of blood cell
  3. 5. when your heart pumps blood it is said to...
  4. 6. a gas carried in blood
  5. 7. stop blood flowing back
  6. 9. top chambers of the heart
  7. 11. blue whale heart is the size of a small...