Circulatory System

123456789101112
Across
  1. 1. flap of tissue between each chamber of the heart the keeps blood moving in the right direction
  2. 4. top chambers of the heart
  3. 5. tiny blood cell parts that form clots and scabs
  4. 6. bottom chambers of the heart
  5. 9. cells in the blood that carry oxygen throughout the body
  6. 10. largest vein in the body
  7. 11. smallest blood vessels
Down
  1. 2. blood veins that carry blood back to the heart
  2. 3. blood cells that fight infection
  3. 4. blood vessels that carry blood away from the heart
  4. 7. organ that pumps blood
  5. 8. fluid that carries materials around the body
  6. 12. largest artery in the body