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6. What happens when blood is taken to the lungs?

  • Oxygen is replenished and CO2 is removed
  • CO2 is replenished and Oxygen is removed
  • Nothing happens

7. Why do the Atriums have a thin muscular wall?

  • It isn't used very much
  • It is the most used part of the heart
  • It pumps blood a short distance
  • It pumps blood a long distance

8. What does the Pulmonary Artery do?

  • Transports blood to all of body
  • Transports blood back from body tissues
  • Transports blood to the lungs
  • Transports blood back from the lungs

9. What does the Aorta do?

  • Transports blood to all of the body
  • Transports blood to the lungs
  • Transports blood back from the body tissues
  • Transports blood back from the lungs