The Cardiovascular System

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Across
  1. 3. a gas we breathe in
  2. 5. two chambers at the bottom of the heart
  3. 6. blood vessels not visible to the naked eye
  4. 10. Blood flowing through the system
  5. 12. Temporary chest pain often after physical activity
  6. 13. An organ the size of a clenched fist
  7. 14. the state of matter of oxygen
  8. 15. Carries blood away from the heart
  9. 16. small collective chambers in the heart
  10. 17. Carries blood back to the heart
Down
  1. 1. a gas we breathe out
  2. 2. description of blood low in oxygen
  3. 4. when the heart is deprived of oxygen
  4. 7. description of blood high in oxygen
  5. 8. Significant escape of blood from the system
  6. 9. Largest artery in the human body
  7. 11. An organ which provides oxygen for the system