Heart Crossword

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Across
  1. 2. the valve that prevents blood from returning to the left atrium from the left ventricle
  2. 6. the valve that prevents blood from going right back into the right atrium from the right ventricle
  3. 9. of his spreads impulses to all parts of the ventricle walls
  4. 12. the natural pacemaker of the heart
  5. 14. outermost layer
  6. 15. leads deoxygenated blood from the right ventricle to the lungs
  7. 17. the largest vein of the body
  8. 18. the valve that prevents the return of blood to the left ventricle from the aorta
  9. 19. muscle of the heart
Down
  1. 1. term for number of times per minute the heart beats
  2. 3. lining of the pericardial sac
  3. 4. active phases of the heart
  4. 5. narrowing
  5. 7. surrounds the heart
  6. 8. the valve that prevents blood form going back into the right ventricle from the pulmonary artery
  7. 10. resting phase of the heart
  8. 11. the great artery
  9. 13. an abnormal heart sound caused by faulty valve action
  10. 14. the lining of the interior of the heart
  11. 16. partition that divides the heart