Unit 9 CVS Vocab

123456789101112131415161718192021222324
Across
  1. 4. ____circulation Circulation of blood between the heart and the lungs, eliminates CO2 and adds O2 to the blood
  2. 5. Relaxation of the heart
  3. 6. one complete heartbeat
  4. 9. ____cavity fluid filled body cavity that contains the heart
  5. 12. outermost layer of the heart, reduces friction
  6. 14. ____tendinae and papillary muscles muscles and tendons that hold the heart valves in place
  7. 15. ____pericardium tough, white fibrous "bag" that is the outer layer of the pericardium
  8. 17. A recording of the electrical activity of the heart
  9. 18. Blood vessels that carry blood back to the heart
  10. 19. muscular, middle layer of the heart
  11. 20. depolarization of the ventricles
  12. 23. ____fibers transmits impulses from AV node deeper into the ventricles.
  13. 24. Contraction of the heart
Down
  1. 1. ____arteries the two arteries that supply blood to the heart muscle
  2. 2. ____circulation circulation that delivers blood to the body and carries wastes away
  3. 3. depolarization of the atria
  4. 7. region of the heart between the right atrium and right ventricle from which electrical impulses spread to the ventricles during a heartbeat
  5. 8. ____center part of medulla oblongata that controls heart rate
  6. 10. fine branching blood vessels that penetrate nearly all tissues,allows exchange of materials between blood and tissues
  7. 11. A blood vessel that carries blood away from the heart
  8. 13. thin inner lining within chambers of the heart
  9. 16. repolarization of ventricles
  10. 21. ____fibers fibers that rapidly conduct electrical impulses throughout the ventricles
  11. 22. pacemaker of the heart, generates electrical impulses resulting in atrial contraction