The Girl in Suite 2103 - S2-E6
Continuity mistake: When Angela and Hodges are working out the size of the silhouette on the wall, as Angela says "which I deny", she's got a relatively serious look on her face. We then cut to a shot from the other side of her, and she's suddenly smiling.
The Blonde in the Game - S2-E4
Continuity mistake: When Booth and Bones are discussing Helen Majors, Booth gets a phone call and he holds the phone to his left ear with his right hand. In the following shot, he is holding the phone in his left hand. (00:21:05)
The Priest in the Churchyard - S2-E17
Continuity mistake: In the diner, Booth states that Father Donlan keeps getting sent troublesome priests. When he does he has one hand in the air. Camera cuts and now he has both hands up in the air. (00:31:00)
Stargazer in a Puddle - S2-E21
Continuity mistake: Near the end we see Bones show Max that she is wearing her grandmother's ring. In the closeup her fingers are all together but in the long shot her fingers are splayed apart. (00:29:30)
The Priest in the Churchyard - S2-E17
Continuity mistake: When Bones and Dr Gordon are in the interrogation room, Dr Gordon has his hands up in front of him when Bones gets a phone call. As the shot changes, his hands are lowered and on the table. (00:26:40)
The Priest in the Churchyard - S2-E17
Continuity mistake: When the priest is naming the plants, Bones' arms go from by her side to crossed in front of her instantly. (00:05:50)
The Priest in the Churchyard - S2-E17
Continuity mistake: When the priest names all the plants he points with his right hand which between camera cuts becomes his left arm. (00:05:50)
The Man in the Mansion - S2-E14
Continuity mistake: When Booth takes Hodgins to the mansion to collect samples he has a chat with Clarissa. When he does so, note his grip on the top of his coffee mug. (00:19:20)
The Man in the Mansion - S2-E14
Continuity mistake: When we see Hodgins look at the picture he takes the frame backing off exposing some writing. We then get a closeup of the writing which has now completely changed. (00:04:50)
The Girl in the Gator - S2-E13
Continuity mistake: After Booth shoots the clown an additional bullet hole appears in the clown's head. (00:01:30)
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 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
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
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)
Continuity mistake: When they pull the body out of the water, there is some vegetation hanging by the body's face in a close up that wasn't there in a previous mid range shot. (00:03:30)
The Girl in the Gator - S2-E13
Continuity mistake: Gordon holds the form out for Booth and it's neatly folded and Booth takes it as so, However when the shot changes, the form is once again opened. (00:06:30)
The Girl in the Gator - S2-E13
Continuity mistake: At the start Dwight tells Bones that the music attracts the kids. When he does, Bones has both arms outstretched. As the camera changes, she now has one arm across her body. (00:01:00)
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.