Chapter 9: The Circulatory System

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Across
  1. 2. Substance in RBC that carries oxygen, gives blood its red color
  2. 4. Watery part of blood
  3. 6. Vessel that carries blood away from the heart
  4. 8. Chamber of heart that pumps blood to the body
  5. 10. Place where RBCs, WBCs, and platelets are formed
  6. 11. One of the two main veins, carries blood from the legs and trunk
  7. 14. Layers of the heart
  8. 15. Working phase of the heart
  9. 16. Pumps blood
Down
  1. 1. Have no color, protect the body against infection
  2. 3. Chamber of heart that receives blood from the body
  3. 5. The thick, muscular part of the heart
  4. 7. Vessels that return blood to the heart
  5. 9. Needed for blood clotting
  6. 12. Tiny blood vessels
  7. 13. Largest artery
  8. 17. Red Blood cells