The Rocker in the Rinse Cycle - S5-E19
Character mistake: When Booth mentions the 2007 Led Zeppelin concert in London, he comments that they toured that year. That Zeppelin concert was not part of a tour, but just a one-off reunion to honor the memory of late Atlantic Records executive Ahmet Ertegun. (00:40:00)
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.