Heart Crossword Puzzle

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Across
  1. 3. The valve between the left atrium and left ventricle, preventing backflow
  2. 5. The blood vessel that carries oxygen-rich blood from the lungs to the heart
  3. 6. The valve between the right atrium and right ventricle, preventing backflow
  4. 7. The valve that controls blood flow from the left ventricle into the aorta
  5. 8. The valve that controls blood flow from the right ventricle into the pulmonary artery
  6. 9. The large vein that carries blood from the upper body to the heart
  7. 11. The first heart chamber to receive oxygen-poor blood from the body
  8. 12. The largest artery in the body that carries oxygen-rich blood from the heart to the body
  9. 13. The strongest heart chamber that pumps oxygen-rich blood to the body
Down
  1. 1. The large vein that carries blood from the lower body to the heart
  2. 2. The blood vessel that carries oxygen-poor blood from the heart to the lungs
  3. 4. The heart chamber that receives oxygen-rich blood from the lungs
  4. 10. The heart chamber that pumps oxygen-poor blood to the lungs