Cardiovascular System Crossword

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Across
  1. 9. general term for an irregular heartbeat
  2. 10. Type O blood is known as the:
  3. 12. red blood cells protein that binds to and transports oxygen
  4. 13. layer of the heart that actually contracts
  5. 14. take blood towards the heart
  6. 16. Contraction of ventricles
  7. 18. Helps control blood loss;helps clot
  8. 20. The right ventricle pumps the oxygen-poor blood from the ____ via the pulmonary arteries
Down
  1. 1. Pacemaker of the heart
  2. 2. Fights pathogens
  3. 3. bottom chambers of the heart
  4. 4. amount of blood pumped out each side of the heart in 1 minute
  5. 5. smallest and most numerous of the blood vessels
  6. 6. medical term for red blood cell
  7. 7. takes blood away from the heart
  8. 8. Makes up about 55% of blood
  9. 11. low blood oxygen due to too few red blood cells or hemoglobin
  10. 15. top chambers of the heart
  11. 17. medical term for white blood cell
  12. 19. Blood Type AB is known as the: