The Blackout in the Blizzard - S6-E16
Continuity mistake: The scene in which Wendell and Hodgins use scotch tape to take an x-ray has the number of photographic panels on which the x-ray appears switching from four (throughout most of the scene) to five (in the close up of the x-ray appearing).
The Blackout in the Blizzard - S6-E16
Continuity mistake: Toward the end in the elevator, Bones says there may be a way out by jumping on the seats to break them because of the rusted bolts between the 1st and 2nd seats, and they break. But at the end in Booth's apartment they are sitting in the seats, and they are numbered 1-4, but the seats look like they broke between seats 1 and 2. When the seats are intact there are 5 of them, so it should have been seats 2-5 that were intact at the end.
Answer: Since the palatine bone is a bone that helps form the mouth it has a lot to do with speaking. The shape of it differs a lot depending on your ethnic background. I would guess that they, in the show, meant that the person's bone tells that they were Japanese and that it was "made for the purpose of speaking Japanese." That's what I'd assume anyway. I've studied molecular biology though, so I'm not an expert on bones.