Continuity mistake: When Booth is showing off his scar to the kid, the picture on the table is constantly changing position between shots. (00:26:10)
Continuity mistake: When Bones and Booth are discussing baby animals, Zac has one hand on his folder. Camera cuts to Zac and he has got 2 hands on his folder. (00:18:00)
Continuity mistake: When Bones and Angela are talking about her leaving, Bones has a lock of hair that is loose and hanging down. Camera cuts and it's gone. (00:16:35)
Continuity mistake: Zac is going over the details of the boy's injuries and in doing so is touching the body. Camera cuts and his hand is now a good 2 foot higher than the body. (00:10:50)
Continuity mistake: At the start Bones starts to put the roof down on her car. Camera cuts and the roof is instantly down. Not possible in an instant cut. (00:01:40)
Continuity mistake: At the very start Bones is holding the microphone and its pointing towards her. Next shot, Dr Goodman has the microphone pointing at him. (00:00:40)
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.