The Cardiovascular System

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Across
  1. 5. premature contraction
  2. 8. a microscopic vessel through which materials are exchanged between the blood and the tissues is a(n)
  3. 9. structure that keeps fluid moving forward
  4. 10. the largest artery is the
  5. 11. drug used to dissolve blood clots
  6. 12. a sinus rhythm originates in the _____ node
  7. 14. the large artery in the neck that supplies blood to the brain is the
  8. 15. drug that increases urinary output
  9. 16. the heart muscle is the
  10. 20. backward flow
  11. 22. central opening of a vessel
  12. 23. removal of plaque
Down
  1. 1. the lymphoid organ in the chest is the
  2. 2. the term varicoid pertains to a(n) ______ vein
  3. 3. the right lymphatic duct and the thoracic duct drain into vessels called the _____ veins
  4. 4. vessel that empties into the right atrium
  5. 6. at its termination in the abdomen, the aorta divides into the right and left
  6. 7. fibrous sac around the heart
  7. 13. a phlebotomist (fleh-bot-o-mist) is one who drains blood from a(n)
  8. 17. each upper receiving chamber of the heart is a(n)
  9. 18. blood returning to the heart from the systemic circuit enters the chamber called the _____ atrium
  10. 19. the large vein that drains the lower body and empties into the heart is the _____ vena cava
  11. 21. the lower pointed region of the heart