The Cardiovascular Sytem

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Across
  1. 5. Prevent blood flowing back into the right atrium from the ventricle
  2. 7. An upper chamber receiving oxygenated blood from the lungs
  3. 8. Carries deoxygenated blood from the heart to the lungs
  4. 10. A lower chamber containing oxygenated blood
  5. 12. Oxygenated blood is pumped at high pressure from the heart to the body
Down
  1. 1. Prevent expelled blood flowing back into the heart
  2. 2. A lower chamber containing de-oxygenated
  3. 3. Returns oxygenated blood to the heart
  4. 4. The wall dividing the left and right sides of the heart
  5. 6. Prevent blood flowing back into the left atrium
  6. 9. Returns deoxygenated blood to the heart
  7. 11. An upper chamber receiving de-oxygenated blood