The Man in the Fallout Shelter - S1-E9
Continuity mistake: During their first night locked in the lab, Bones and Angela are discussing that they should plan a party for Christmas. Bones' bra straps move on her left shoulder between overhead shots and closeup shots.
The Man in the Fallout Shelter - S1-E9
Continuity mistake: Booth reaches out to touch the glass and Parker's hand. In the first shot his hand is spread out, in the second his fingers are a lot closer together. (00:25:10)
The Man in the Fallout Shelter - S1-E9
Continuity mistake: When Bones is explaining to Booth about the birth of Christ, Booth has 2 hands on his chin. When the angle changes, he has one hand on the table and one on the side of his head. (00:13:00)
The Man in the Fallout Shelter - S1-E9
Continuity mistake: At the very start we have a message appear on screen saying it's December 23rd, 6pm. When we see Hodgins and Zack the clock shows 4:30. (00:00:25 - 00:02:40)
The Man in the Fallout Shelter - S1-E9
Continuity mistake: When Booth calls Bones the Christmas Killer, he flips a photo over only for it to be back the way it was in the next shot without anyone touching it. (00:14:00)
The Man in the Fallout Shelter - S1-E9
Continuity mistake: Goodman passes a picture of his family to Booth. In the close up we see Booth holding the photo with 2 hands. In the long shot he is holding it with one. (00:11:00)
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.