Circulatory System

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Across
  1. 5. my full name
  2. 8. direct blood flow from the ventricles into the aorta and pulmonary trunk artery
  3. 9. covers the inner surface of the heart wall
  4. 11. controls the flow of blood from your heart's right atrium to the right ventricle
  5. 13. recording of the electrical events in the heart
  6. 16. blood vessels that supply blood to the heart
  7. 17. a small, ear shaped appendage that extends anteriorly from each atrium
  8. 19. transports oxygen-depleted blood from the upper extremities, head, and neck
  9. 20. faster than normmal heart rate
  10. 21. receives deoxygenated blood from the body
Down
  1. 1. phase of the cardiac cycle where the heart relaxes
  2. 2. outer layer of the heart wall
  3. 3. phase of the cardiac cycle where the heart contracts
  4. 4. period between the start of one heartbeat and the start of the next
  5. 6. narrow end of the heart
  6. 7. broad end of the heart
  7. 10. convey impulses to the contractile cells of the ventricular myocardium
  8. 12. largest artery of the body
  9. 14. gap junction that links cardiac muscle cells together
  10. 15. fibrous sac that surrounds the heart
  11. 18. represents the electrical depolarization of the atria of the heart on an EKG