The Monster in the Closet - S11-E13
Continuity mistake: Cam finds the watch covered in cat food. Between camera angles the amount of cat food on the watch is constantly changing. (00:19:40)
The Monster in the Closet - S11-E13
Continuity mistake: Karen cuts her hand in the interrogation room. Between camera angles the amount of blood changes instantly. (00:24:15)
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.