heart

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Across
  1. 3. it carries blood away from the heart
  2. 4. where an artery and a vein meet
  3. 7. type of muscle
  4. 9. the lower two parts of the heart
  5. 10. the two upper parts of the heart
Down
  1. 1. a very large vein
  2. 2. it carries blood towards the heart
  3. 5. it makes sure your heartbeat is stable
  4. 6. it is the wall that separates the right and left side of the heart
  5. 8. the main artery
  6. 9. what opens and closes to keep the blood moving