Circulatory System

1234567891011121314151617181920
Across
  1. 3. specialized protein on red blood cells that carry oxygen
  2. 6. muscular wall that separates the heart into a right and left side
  3. 7. red blood cell, contains hemoglobin
  4. 8. heart ventricles are resting and filling
  5. 10. blood vessel that carries blood to the heart
  6. 12. one cell thick, connects arterioles with venules
  7. 14. largest artery in the body
  8. 15. takes blood away from the heart
  9. 16. cells required for clotting, platelets
  10. 20. smooth layer of cells that lines the inside of heart
Down
  1. 1. membranous sac that surrounds the heart
  2. 2. pacemaker of the heart
  3. 4. high blood pressure
  4. 5. heart attack
  5. 9. white blood cell, fights infection
  6. 11. a muscular pump
  7. 13. a ballooning out or a sac like formation on the wall of an artery
  8. 17. muscular middle layer of the heart
  9. 18. ventricular contraction (when the heart works)
  10. 19. fluid portion of the blood