The Circulatory System

1234567891011
Across
  1. 6. The two upper chambers of the heart
  2. 7. Yellow liquid part of the blood
  3. 8. Smaller that red blood cells
  4. 10. Blood vessels that carry blood back to the heart
  5. 11. Iron-containing substance in red blood cells
Down
  1. 1. The powerful lower chambers of the heart
  2. 2. The movement of blood through the vessels
  3. 3. Small vessels connecting arteries and veins
  4. 4. The four divisions of the heart
  5. 5. Measurement of your heartbeat
  6. 6. Blood vessels that carry blood away from heart
  7. 9. Works like a door that opens in one direction only