circulatory system

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Across
  1. 2. a chamber in the heart
  2. 4. carries blood away from the heart
  3. 7. begins at left ventricle of the heart
  4. 9. without oxygen
  5. 11. a muscle used to pump blood around the body
  6. 12. forms a networks throughout body tissues
  7. 13. a protein found in red blood cells
Down
  1. 1. prevents backward flow of blood
  2. 3. the name of a system that pumps blood
  3. 5. with oxygen
  4. 6. a liquid that circulates the human body
  5. 8. creates output to maintain blood flow to other organ systems
  6. 10. carries blood back to the heart