Circulatory System

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Across
  1. 3. the bottom chambers of your heart
  2. 5. type of blood cells that fight pathogens
  3. 8. blood leaves the heart to go to the lungs at the _____ ventricle
  4. 9. blood vessels that return blood to the heart
  5. 10. blood enters the heart from either the superior or inferior ________
Down
  1. 1. the valve with 3 sections
  2. 2. common issue with babies hearts, usually fixed by itself
  3. 4. animal most commonly used for valve replacement
  4. 6. the leading cause of death in the US
  5. 7. the name of the second heart in a horse
  6. 11. the top chambers of your heart