CARDIAC CYCLE

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Across
  1. 4. the contraction of the heart is initiated by this
  2. 6. valve between the right atrium and ventricle
  3. 9. High intensity exercise
  4. 12. a graph that can show us the electrical activity of the heart
  5. 13. the node that holds the impulse for 0.1 seconds
  6. 14. the phase when the heart is contracting
  7. 18. muscle between the two ventricles
  8. 19. the law that states that due to a continuing increase in venous return a continued increase in stroke volume will occur
Down
  1. 1. the phase when the heart is relaxed
  2. 2. a wave of this is sent across both atria to cause systole
  3. 3. the hormone that enables anticipatory rise
  4. 5. the name given to the Pulmonary and Aortic valve
  5. 7. the volume of blood ejected from the heart per beat
  6. 8. the valve between the left atria and ventricle
  7. 10. volume of blood ejected from the left ventricle per minute
  8. 11. the volume of blood returning to the heart
  9. 15. low to moderate intensity exercise
  10. 16. the speed at which our heart beats
  11. 17. the fibres that surround the ventricles