The Secret in the Soil - S3-E4
Continuity mistake: Just as the gang establish it's a pitchfork Hodgins has an open file in his hands. When the camera changes, he opens the folder. (00:32:10)
The Secret in the Soil - S3-E4
Continuity mistake: When taking her tablets near the start, she has left hand across her lap then up by her head in the next. (00:07:50)
The Secret in the Soil - S3-E4
Continuity mistake: When talking to the victims wife, the daughter givers her some tablets, and she grabs them with her left hand. The camera cuts and now they are in her right hand. (00:07:50)
Other mistake: While driving in the car both Booth and Bones have the windows wide open yet their hair never moves or blows in the wind. (00:14:20)
Continuity mistake: When they get the body back to the lab, both Cam and Bones have their fingers near the forehead wound. When the shot changes, Bones' fingers are now down in the cheek wound. (00:02:30)
Soccer Mom in the Mini-Van - S3-E2
Continuity mistake: Hodgins walks up onto the platform holding a tray of equipment when talking about the victims lawyer. The way he holds the tray and the hand that's holding it, however changes between shots. (00:15:40)
The Widow's Son in the Windshield - S3-E1
Continuity mistake: In the interrogation room Booth shows the girl a picture of her and the victim kissing, and he then clasps his hands together. However, when we see Booth on the screen behind the glass which is a live feed of what's happening inside the room, his hands are clasped.
The Widow's Son in the Windshield - S3-E1
Continuity mistake: When Booth and Cam are talking about hiring Clark, Cam has her hands in a bowl of peanuts in one shot and holding a beer bottle in the next. (00:09:10)
The Widow's Son in the Windshield - S3-E1
Continuity mistake: Just as Booth learns that a cannibal has eaten the victims face, the amount of sandwich he has left changes between shots. (00:05:40)
Stargazer in a Puddle - S2-E21
Continuity mistake: Max asks Bones to try the ring on and Bones has her arms by her side. As the shot changes she now has her arms crossed in front of her and on the table. (00:09:45)
Stargazer in a Puddle - S2-E21
Continuity mistake: The way Max holds out the ring for Bones changes between the long shot and the extreme closeup. (00:09:30)
The Glowing Bones in the Old Stone House - S2-E20
Continuity mistake: When speaking to the husband in the kitchen and saying about going over the books, the husband has his hand up to his head in one shot and lowered in the immediate following shot. (00:18:30)
The Glowing Bones in the Old Stone House - S2-E20
Visible crew/equipment: At the start as Bones says about how Angela turned Hodgins down, there is a clear shot of Bones' top and a microphone visible just inside it. (00:01:00)
The Killer in the Concrete - S2-E18
Continuity mistake: When the bounty hunter sits down in the diner, booths grip on his spoon changes between shots. (00:08:30)
The Priest in the Churchyard - S2-E17
Audio problem: When Father Sands asks Booth if he does all his investigations based on rumour his mouth doesn't move in the over the shoulder shot. (00:29:50)
The Priest in the Churchyard - S2-E17
Continuity mistake: When Bones is saying about the yew trees near the start, Booth puts his hand up to his mouth to hide him saying shut up. His hand is empty in one shot and got a piece of paper in the next. (00:06:20)
The Priest in the Churchyard - S2-E17
Continuity mistake: When handed the sketch in the rose garden, the priest has some secateurs in his right hand which are not there in the closeup of the sketch. (00:05:30)
The Boneless Bride in the River - S2-E16
Visible crew/equipment: When we first see both sets of remains on the table at the Jeffersonian, Angela walks up to the tables and a tape marker is visible on the floor by her feet. (00:31:40)
The Boneless Bride in the River - S2-E16
Visible crew/equipment: When talking to the directors of the funeral home, Booth stands up from his desk and walks behind the 2 people. As he does so, a blue tape marker is visible on the floor by Booth's desk. (00:29:50)
The Boneless Bride in the River - S2-E16
Continuity mistake: Zack identifies the bone as belonging to a male who died 2 years ago of cancer. Booth, when questioning the parents say's it was 3 years ago they buried their son and the parents agree. (00:25:00)
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.