Cardiovascular System Crossword

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Across
  1. 2. The heart is used to pump this around the body
  2. 4. This prevents blood from flowing backward
  3. 7. The heart is found on this side of the chest
  4. 8. Doing this type of physical activity will keep the heart strong
  5. 9. The number of chambers found in the heart
  6. 11. This muscle pumps blood throughout the body
Down
  1. 1. The name for a lower chamber of the heart
  2. 3. This is the molecule carried by blood that is necessary for life
  3. 5. This blood vessel carries blood away from the heart
  4. 6. This blood vessel carries blood from the body to the heart
  5. 10. The name for an upper chamber of the heart