Biology

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Across
  1. 5. causes brain tissue damage
  2. 6. gives blood its red colour
  3. 8. have one-cell thin walls
  4. 10. holds all blood cells
  5. 12. clotting that stops bleeding
  6. 14. glucose+oxygen→carbon dioxide+water
  7. 15. narrows your arteries
Down
  1. 1. routes that blood travels
  2. 2. Part of body immune system
  3. 3. cannot live without it
  4. 4. carries oxygen
  5. 7. transport blood to heart
  6. 9. a lack of iron
  7. 11. heart muscles is blocked
  8. 13. transport blood from heart