The heart

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Across
  1. 2. carry blood away from heart
  2. 3. prevent blood from flowing back into the atria
  3. 8. atria contract, force blood through the AV valves into ventricles
  4. 11. measure and record the heart’s electrical activity
  5. 12. separates deoxygenated and oxygenated blood
Down
  1. 1. abnormally slow heart rate
  2. 4. where oxygenated blood leaves the heart
  3. 5. primary pacemaker of the heart
  4. 6. self-stimulating
  5. 7. carry deoxygenated blood from lung to right atrium
  6. 9. the volumetric flow rate of the heart’s pumping output
  7. 10. transport blood back to the heart