Cardiovascular System

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Across
  1. 2. White blood cells are also called these
  2. 5. These are the smallest blood vessels
  3. 6. This is what gives blood its red color
  4. 7. The heart pumps this
  5. 8. The cardiovascular system circulates this _______
  6. 11. The cardiovascular system transports this ____
  7. 12. This is the most important organ in the cardiovascular system
Down
  1. 1. The heart ________ 100,000 times a day
  2. 3. These are what prevent blood from flowing the wrong direction
  3. 4. The cardiovascular system removes this ____
  4. 9. These carry blood to the heart
  5. 10. These carry blood away from the heart