Cardiovascular System

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Across
  1. 4. When the heart stops working
  2. 6. The disease of our heart and blood vessels
  3. 7. The main organ in our cardiovascular system
  4. 9. Blood vessels that bring blood away from the heart
Down
  1. 1. The substance within blood thats in the arteries. Our organs need it.
  2. 2. pressing on someone's chest to get their heart pumping
  3. 3. When the walls of an artery or vein become thick or clogged, blood cannot get to the heart.
  4. 5. breathing into someone to give them oxygen
  5. 6. lifesaving care that you can give to someone with cardiac arrest.
  6. 8. Blood vessels that bring blood to our heart