crossword, cardiovascular A&P

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Across
  1. 5. sac that surrounds the heart
  2. 9. inner-most layer of the heart wall
  3. 10. valve that separates the right atrium from the right ventricle
  4. 16. the pulmonary arteries send blood to the ______
  5. 18. this EKG wave form represents ventricular repolarization
  6. 19. the SA node passes electrical impulses to the ________
  7. 20. the amount of blood that is pumped out of the heart with each beat
  8. 24. this EKG wave form represents ventricular depolarization
  9. 26. these blood vessels are located between arteries and arterial capillaries
  10. 27. major blood vessel that sends oxygenated blood out to the body
  11. 28. the left side of the heart is concerned with ______ circulation
  12. 29. one of the semilunar valves
  13. 30. term for when the atria or ventricles quiver uselessly
  14. 32. a heart attack
  15. 34. outer-most layer of the heart wall
Down
  1. 1. the right side of the heart is concerned with _____ circulation
  2. 2. these vessels always carry blood toward the heart
  3. 3. term that refers to contraction stage of the cardiac cycle
  4. 4. lower chambers of the heart
  5. 5. located within the walls of the ventricles, these fast-conducting fibers are responsible for ventricular contraction
  6. 6. occurs when a valve does not close properly
  7. 7. these very tiny blood vessels are responsible for the diffusion of O2 and CO2 across their very thin walls
  8. 8. another name for the bicuspid valve
  9. 11. muscular wall that separates the right side of the heart from the left side of the heart
  10. 12. these blood vessels are located between veins and venous capillaries
  11. 13. this EKG wave form represents atrial depolarization
  12. 14. term that refers to the relaxation stage of the cardiac cycle
  13. 15. there are ____ pulmonary veins
  14. 17. blood vessels that bring deoxygenated blood from the body to the right atrium
  15. 21. this type of beat originates from outside the SA node
  16. 22. the natural pacemaker of the heart
  17. 23. these vessels always carry blood away from the heart
  18. 25. middle layer of the heart wall
  19. 31. valve that separates the left atrium from the left ventricle
  20. 33. the volume of blood that is pumped out of the heart in one minute
  21. 35. upper chambers of the heart