Tissue and system crossword

12345678910111213
Across
  1. 6. 11
  2. 7. 2
  3. 8. 4
  4. 9. 13
  5. 12. 6
  6. 13. 5
Down
  1. 1. 3
  2. 2. 10
  3. 3. 7
  4. 4. 9
  5. 5. 8
  6. 10. 1
  7. 11. 12