The blood cycle

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Across
  1. 1. Helps the heart keep its pumping rhythm
  2. 4. Receives blood from the veins
  3. 6. Takes blood back to the heart
  4. 8. Keeps the ventricles separated
  5. 9. Takes unoxygenated blood back into the heart
  6. 11. Pushes the blood into the arteries to go out
Down
  1. 2. Takes blood out of the heart
  2. 3. "Pumps" the heart
  3. 5. Smaller blood vessels that range in size, taking blood to the outer reaches of the body
  4. 7. Lets blood through forwards but not back
  5. 10. Takes oxygenated blood and sends it out to the body