Circulatory System

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Across
  1. 2. abnormal rhythm of the heart
  2. 4. the heart beats too slow
  3. 7. attack, a blockage in a blood vessel
  4. 9. valve does not open enough to let blood through
  5. 10. connect veins and arteries
Down
  1. 1. plaque builds up on inside of arteries
  2. 3. carry blood away from the heart
  3. 5. main organ of the circulatory system
  4. 6. control the direction of blood flow
  5. 8. carry blood back to the heart