Heart

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Across
  1. 3. Carries oxygen-rich blood away
  2. 5. Connects arteries to veins
  3. 7. Wall of tissue that separates the heart
  4. 10. Helps contract the heart
  5. 11. Pumps blood through
Down
  1. 1. Large veins that bring blood to the heart
  2. 2. Carries oxygen-poor blood to the heart
  3. 4. Carries oxygen-rich blood away
  4. 6. Regulates the heart's rhythm
  5. 8. Opens and closes to control blood flow
  6. 9. Blood flows through