Skeletal terms

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Across
  1. 3. joint
  2. 5. spinal cord
  3. 8. rib
  4. 9. chest
  5. 10. neck
Down
  1. 1. sac
  2. 2. (porous)
  3. 3. stiff joint
  4. 4. bone
  5. 6. (suffix)slipping
  6. 7. outer portion