The Knight on the Grid - S3-E8
Other mistake: Towards the end of the episode, Bones and Booth visit social services and discover the identify of an elderly man whom they then suspect to be a Gormagon Master, who had retired from social services and lived in a nursing home. Much earlier in the episode, back at the lab, there is a glass panel with a flow chart of Masters and Apprentice Gormagon's - one labeled Master has the picture of the old man from the nursing home - this is before the visit to social services or the nursing home. (00:28:20)
The Knight on the Grid - S3-E8
Other mistake: The Gorgomon's bank vault discovered earlier in this season, is cluttered with 'stuff'. But in this episode, Zach discovers that multiple mirrors in the area were placed with care (and not randomly) to allow an video/audio device to see 'all parts of the vault'. First-I doubt any camera would be good enough to see much of anything except the one mirror it was looking at, much less multiple mirrored views (Zach used a laser to show the mirror positions). Second-the Jeffersonian staff are examining all the 'stuff' - they'd have to move some things to use equipment, etc. to check them out. It can be assumed they would have put things back in their original place/position, but it would have been impossible to re-place everything in so precisely the same position that the view, via multiple mirrors, would be the same.
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.