The Heart

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