The Heart

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Across
  1. 4. how cells in cardiac muscle are linked
  2. 5. nervous system which causes increased heart rate and contraction force when stimulated
  3. 7. difference between systolic and diastolic blood pressure
  4. 11. valve located between right atrium and right ventricle
  5. 12. keeps blood from flowing back into left ventricle
  6. 14. hormone which causes increased heart rate and cardiac output
  7. 15. heart rate less than 60 beats per minute
  8. 16. too much of this electrolyte increases heart rate
  9. 17. contraction of heart muscle
  10. 18. relaxation of heart muscle
  11. 20. location of the heart in the thoracic cavity
  12. 21. diagnostic test used to assess the electrical activity for diagnosing arrhythmias
Down
  1. 1. volume of blood pumped by each ventricle in a minute
  2. 2. heart rate greater than 100 beats per minute
  3. 3. heart's pacemaker where rate of 60-100 is set
  4. 6. first branches off of aorta supply blood to heart
  5. 8. too much of this electrolyte can slow the heart rate
  6. 9. largest heart chamber with thickest wall to pump blood out to entire body
  7. 10. risk factors for heart disease which cannot be changed
  8. 13. thickest layer of the heart/heart muscle
  9. 19. valve located between left atrium and left ventricle