Circulatory system

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Across
  1. 4. largest artery that carries blood from heart to body
  2. 5. organ that stop backflow
  3. 6. pulmonary artery is located at _______
  4. 7. related to lungs
  5. 11. blood cells with high amount of oxygen
  6. 12. blood cells with low amount of oxygen
  7. 14. blood vessel that takes away blood from heart to body
  8. 15. heart upper chamber
Down
  1. 1. largest vein that carries blood back from the body
  2. 2. inside space of any blood vessel
  3. 3. a collection of the smallest blood vessel in the body
  4. 5. blood vessel that return blood to heart
  5. 8. heart lower chamber
  6. 9. smallest blood vessel in the body
  7. 10. where bicuspid valve is located
  8. 13. pump blood to lungs and then to the body