Circulatory System

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Across
  1. 2. the body system that includes the heart, blood vessels, and blood.
  2. 5. a blood vessel that carries blood to the heart.
  3. 6. a blood cell that carries oxygen throughout the body.
  4. 8. a small blood cell that helps the blood to clot.
  5. 10. a blood vessel that carries blood away from the heart.
  6. 11. either of the two lower chambers of the heart that pumps blood through arteries.
Down
  1. 1. a blood cell that fights infection by destroying microscopic, disease causing organisms.
  2. 2. a tiny blood vessel.
  3. 3. a tube in the body through which blood flows.
  4. 4. a waste product in the blood that comes from the breakdown of proteins.
  5. 7. the muscular organ that pumps blood throughout the body.
  6. 9. either of the two upper chambers of the heart that receives blood from veins.