heart crossword

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Across
  1. 8. Carry electrical impulses through the R and L atria causing the atria to contract together
  2. 9. When heart muscles cells are at rest, There is no electrical activity in the cells
  3. 11. Between R ventricle & pulmonary artery
  4. 14. muscular middle layer of the heart
  5. 15. collects blood from body
  6. 19. Between L atrium & ventricle
  7. 23. blood vessels taking blood away from the heart
  8. 24. connects veins and arteries
  9. 25. Electrical path from atria to ventricles, Delays impulse
  10. 26. protective outer layer
  11. 27. Conducting fibers in the interventricular septum,Carries impulses to R & L ventricles
  12. 28. blood vessel that takes blood from the heart to the lungs
  13. 29. blood vessel that takes blood from the lungs to the heart
  14. 30. blood vessels taking blood towards from the heart
  15. 31. thin inner layer
Down
  1. 1. Heart muscle cell recovery period immediately after contraction, returning heart muscle cells to a resting state
  2. 2. The large vein that attaches to the heart
  3. 3. Electrical activation of the heart muscle cells
  4. 4. pumps blood to the lungs
  5. 5. Conducting fibers that branch off of the Bundle of His
  6. 6. collects blood from lungs
  7. 7. pumps blood to the body
  8. 10. ______ blood flows from the R atrium into the R ventricle
  9. 12. Between L ventricle & aorta
  10. 13. the arteries that provide oxygen and nutrients to the myocardium
  11. 16. Dividing “walls” between right & left sides of the heart
  12. 17. _______ blood returns to the L atrium of the heart via the pulmonary veins.
  13. 18. Between R atrium & ventricle
  14. 20. Numerous branches of fibers throughout the ventricular myocardium
  15. 21. The large artery that attaches to the heart
  16. 22. Where the electrical impulse is initiated