The Transport Systems

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Across
  1. 3. Receives blood
  2. 5. The left atrium receives _______ blood from the lungs
  3. 6. The pacemaker for rhythm of the heart
  4. 11. A blood vessel that allows deoxygenated blood to return from capillaries to the veins
  5. 12. These structures close after blood moves through them; like a door, doesn't allow blood to get out and controls how much blood comes in
  6. 13. A ____ in your heart rate can indicate that something is wrong!
  7. 15. This structure separates the atria and the ventricles of the heart and it also prevents back flow of blood into the atria
  8. 16. Take blood AWAY from the heart; oxygen rich
  9. 17. Sends blood
Down
  1. 1. Take blood TO the heart; oxygen poor
  2. 2. This is taken away by the trachea
  3. 4. The Pulmonary circuit pumps blood to this organ
  4. 7. Gas exchange and oxygenation occurs because of this structure
  5. 8. These structures contribute blood flow into the capillaries
  6. 9. The right ventricle receives _____ blood from the right atrium
  7. 10. The largest vein in the body
  8. 14. Largest artery in the body