Cardiac Crossword

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Across
  1. 4. a large vein that carries deoxygenated blood to the heart
  2. 8. a device for regulating heart muscle contractions
  3. 9. controls the flow of liquid/blood
  4. 11. the smallest type of blood vessel
Down
  1. 1. the two lower chambers of the heart
  2. 2. type of blood vessel that usually transports oxygenated blood
  3. 3. dividing wall between chambers of the heart
  4. 5. artery that supplies oxygenated blood to the body straight from the heart
  5. 6. the two upper chambers of the heart
  6. 7. muscle that contracts to make the heart pump blood
  7. 10. type of blood vessel that usually carries deoxygenated blood back to the heart