Circulatory system

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Across
  1. 1. Cell debris used to seal punctures in blood vessels to form a clot.
  2. 4. The top chambers of the heart.
  3. 5. Regulating the same internal body environment.
  4. 7. Molecules of chemicals needed to support life of the cells.
  5. 9. A complex component of the circulatory system.
  6. 11. Away from the heart.
  7. 12. The lower chambers of the heart
Down
  1. 2. Largest artery in the body.
  2. 3. Towards the lungs.
  3. 6. Carrying oxygen in the blood.
  4. 8. Not carrying oxygen in the blood.
  5. 10. Towards the heart.