Circulatory System

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Across
  1. 3. describes blood containing oxygen
  2. 6. describes blood containing CO2
  3. 7. the valve leading from the left atrium to the left ventricle
  4. 10. a lower chamber of the heart
  5. 11. an upper chamber of the heart
  6. 12. largest artery in body, that sends blood out to whole body
Down
  1. 1. the artery that leads to the lungs
  2. 2. the vein that leads from the lungs to the heart
  3. 4. the valve leading from the right atrium to the right ventricle
  4. 5. blood vessel that leads away from the heart
  5. 8. blood vessel that leads to the heart
  6. 9. the body system concerning the heart, blood vessels, and blood