Continuity mistake: Booth shoots the kidnapper through a door, creating a hole. This hole vanishes when Brennan walks out the door with Megan.
Factual error: E.M.T.'s do not normally have access to those type of drugs. Only Paramedics usually do.
Continuity mistake: The PI hands Angela a picture of a house and the way Angela holds the photo changes between shots. (00:22:30)
Visible crew/equipment: Just after the meeting Between Hodgins, Angela and the PI, we see a shot of Booth's FBI truck. In this shot you can see the silver camera car reflected in the black paintwork complete with open door for the camera. (00:09:10)
Continuity mistake: When Hodgins holds up the label from the clothes, the way he holds it changes between shots. (00:05:45)
Continuity mistake: At the start, the sweets that Hodgins has got in his hands changes from 1 red lolly to 2 gold coins. (00:04:30)
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.