Player Under Pressure - S3-E11
Continuity mistake: When Bones and Booth are talking to the cheerleaders at the Jeffersonian, the last cheerleader has her right hand up to her mouth in one shot then her left hand up to her head in the next. (00:33:50)
Player Under Pressure - S3-E11
Continuity mistake: Celeste is in the interrogation room with her hand next to her fiancé's. As the shot changes, her hand is no longer next to her fiancé's. (00:35:50)
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.