'The Hard Stuff!

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Across
  1. 2. the act or process of fusing
  2. 4. having a backbone or a spinal column
  3. 6. a soft,fatty,vascular tissue
  4. 8. the top of the skull
  5. 9. a firm,elastic,flexible type of tissue
  6. 12. the lower part of the alimentary canal
  7. 14. a hornlike structure
Down
  1. 1. surgery
  2. 3. a jointed device or flexible piece
  3. 5. a subordinate part attached to something
  4. 7. related to the occipital bone
  5. 10. of or relating to time
  6. 11. a pod vessel of such a plant
  7. 13. a fastening device