The Circulatory System

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Across
  1. 1. vessels which carry blood away from the heart
  2. 6. the liquid portion of the blood
  3. 8. the substance which is pumped through your circulatory system
  4. 11. the ______ vena cava carries blood from the upper portion of the body back to the heart
  5. 13. this chamber of the heart pumps blood to the rest of the body
  6. 14. the large artery which leaves the heart to carry blood to the rest of the body
  7. 16. the muscular organ which pumps blood around the body
  8. 17. this chamber of the heart receives blood from the lungs
  9. 18. vessels which return blood to the heart
Down
  1. 2. _______ blood cells carry oxygen with the blood
  2. 3. this chamber of the heart pumps blood to the lungs
  3. 4. small vessels which can be only one cell in diameter
  4. 5. these structures ensure one way flow of blood through the circulatory system (making sure blood does not flow backward)
  5. 7. the _____ vena cava carries blood from the lower portion of the body back to the heart
  6. 9. this chamber of the heart receives blood from the rest of the body
  7. 10. the expansion of arteries (during a heartbeat) that can be measured at the wrist or neck
  8. 12. ____blood cells help to fight infection within the body
  9. 15. structures in the blood which are important in clotting