Bones of the head, neck and shoulders

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Across
  1. 4. Forms the bridge of the nose
  2. 6. Bone of the lower jaw
  3. 8. Forms the forehead
  4. 11. from the centre of the chest to the shoulder
  5. 12. Upper back behind the ribs
  6. 13. Centre of the chest
Down
  1. 1. Bones of the upper jaw
  2. 2. Forms the cheekbone
  3. 3. Sides and top of the head
  4. 5. vertebrae Bones of the neck
  5. 7. Forms the back of the head
  6. 9. Above and around the ear
  7. 10. Bone dog the upper arm