The Widow's Son in the Windshield - S3-E1
Continuity mistake: Just as Booth learns that a cannibal has eaten the victims face, the amount of sandwich he has left changes between shots. (00:05:40)
Soccer Mom in the Mini-Van - S3-E2
Continuity mistake: At the end sat on the steps of the Lincoln memorial, Bones' arms keep alternating they way they are crossed. (00:42:30)
Soccer Mom in the Mini-Van - S3-E2
Continuity mistake: Max walks into the meeting room with Bones and the guard closes the door. A few moments later the door is closed again. (00:08:25)
The Knight on the Grid - S3-E8
Continuity mistake: When Bones is dragged from the taxi after the explosion, she finds a tooth lodged in her arm (from bomb shrapnel). But she was pulled down for safety by Booth just before it went off, and was not exposed to the shrapnel - she was protected by the car door, and nothing was in a direct line to her. Added to that is the fact that her LEFT arm was hit - the arm that would have been on the 'inside/centre' of the front seat (the bomb went off on the right side of the car), and on which she was most likely lying - completely protecting that part of her body. (00:25:40)
The Knight on the Grid - S3-E8
Continuity mistake: Amy comes to see Brennan at night to tell her about her daughter's sickness. There are a bunch of letters on the kitchen counter. The envelopes move around in between shots, most noticeably the brown one. (00:03:20)
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.