hearts

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Across
  1. 1. substance that will change the contractility of the heart
  2. 5. vasomotor location in the brain stem
  3. 9. the study of the heart using sound
  4. 12. causes veins to constrict
  5. 17. high blood pressure
  6. 18. the atrial pressure than needs to be overcome
  7. 20. the main ion involved for contraction
  8. 21. contraction of the heart chambers
Down
  1. 2. long hand ECG
  2. 3. relating to the lungs
  3. 4. sense stretch in the aortic arch and carotid bodies
  4. 6. the three leaf valve
  5. 7. low blood pressure
  6. 8. the heart muscle cell
  7. 10. the force associated with the degree of initial stretch
  8. 11. circulation relating to the whole body
  9. 13. directly increased with increased contractility
  10. 14. formed when actin and myosin bond
  11. 15. blood flow
  12. 16. ECG sign for ventricular depolarisation
  13. 19. relaxation of the heart chambers