Soccer Mom in the Mini-Van - S3-E2
Continuity mistake: In the opening scene the victim's right hand is by the car shifter when the bomb explodes, but when Booth and Brennan first get to the van, the right hand is melted onto the steering wheel. (00:00:50 - 00:01:35)
Soccer Mom in the Mini-Van - S3-E2
Continuity mistake: When we see Booth and Caroline in the interrogation room for the first time the gentleman has his legs crossed right over left. When the camera changes he is sat left over right. (00:16:50)
Soccer Mom in the Mini-Van - S3-E2
Continuity mistake: When Bones first opens the locket at the crime scene the way it's held changes between shots. (00:02:50)
Soccer Mom in the Mini-Van - S3-E2
Continuity mistake: Hodgins walks up onto the platform holding a tray of equipment when talking about the victims lawyer. The way he holds the tray and the hand that's holding it, however changes between shots. (00:15:40)
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)
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.