circulatory system

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Across
  1. 3. Largest artery in your body
  2. 6. Connect arterioles with venules
  3. 10. Carries oxygenated blood away from the heart
  4. 11. Small veins
Down
  1. 1. Small arteries
  2. 2. Stop blood flowing backward in the heart
  3. 4. Four main sections of the heart
  4. 5. Returns deoxygenated blood back to the heart
  5. 7. The lower chambers of the heart
  6. 8. Main organ of the circulatory system
  7. 9. The upper chambers of the heart