Continuity mistake: When Booth is showing the belly button ring to Rulz, he holds the bag with the ring on the right side of the bag. Camera cuts and now it's on the left. (00:17:20)
Continuity mistake: When the mummy is discovered in the wall the mouth is closed shut. When the mummy is in the lab the mouth is open. (00:04:30)
Continuity mistake: At the very start Bones is holding the microphone and its pointing towards her. Next shot, Dr Goodman has the microphone pointing at him. (00:00:40)
Two Bodies in the Lab - S1-E15
Continuity mistake: After Bones and Booth have a little argument at the crime scene, Bones takes her Dictaphone out and starts taking notes. When doing so she is holding the Dictaphone vertically. Camera changes and now it is horizontal. (00:06:00)
Two Bodies in the Lab - S1-E15
Continuity mistake: When Booth asks Bones what happened to seeing someone across the room, eyes meeting etc, Bones hand holds of the top of her clipboard. Camera cuts and her hand has vanished. (00:03:20)
Two Bodies in the Lab - S1-E15
Continuity mistake: At the start when Dr. Goodman interrupts Bones, her hands go from the keyboard to on the arm of her chair instantly. (00:00:45)
The Man on the Fairway - S1-E14
Continuity mistake: When Booth is talking to Max's son about how the simplest explanation is usually right, he is pointing with his finger, camera cuts and he is no longer pointing. (00:29:25)
The Man on the Fairway - S1-E14
Continuity mistake: When Angela walks over to the wood chipper she is drinking from her drink. Camera cuts and she has her arm with her drink in out to the side. (00:25:40)
The Woman in the Garden - S1-E13
Continuity mistake: When the man who put a hit out on Bones is ambushed by Booth, Booth's grip on his face changes instantly. Note the fingers in front/behind his ear. (00:39:30)
The Woman in the Garden - S1-E13
Continuity mistake: When looking for the plant Hodgins, Bones and Booth are in the 4x4 driving down the road. However in the shot of the car approaching the camera it is not Booth driving. (00:07:40)
The Man in the Fallout Shelter - S1-E9
Continuity mistake: Bones puts the skull down on the table facing to the left. Camera cuts and the skull is facing to the right. (00:00:45)
Continuity mistake: Angela asks Bones what the rush is. When she does, Bones' ponytail is down her back. Camera changes angle and now it's over her shoulder without moving her head. (00:12:45)
Continuity mistake: When Booth is interviewing The Man in the Wall, he is stood to the side of the door. Camera changes and now he is in the middle of the door. (00:33:50)
Continuity mistake: We see Bones draw a chalk outline on the floor and it is fairly faint. When we next see it, the lines are a lot more refined. (00:30:30)
The Woman in the Garden - S1-E13
Continuity mistake: Booth and Brennan arrive at the crime scene in the beginning of the show. After she has confirmed that the bones in the trunk belonged to a woman, a black car drives by and shots are fired. At first, the trunk of the car is less than halfway opened. Cut to the next shot and the trunk is fully opened. (00:02:10)
Two Bodies in the Lab - S1-E15
Continuity mistake: At the lab, after the body has been brought in, Bones is looking at the feet in the cement. Her ponytail is messily tied. When she tells Zack that she'll be busy that night, her hair is now neatly tied. (00:02:05)
The Graft in the Girl - S1-E20
Continuity mistake: The assistant transplant coordinator tells Bones that another woman, Kelly DeMarco, had the same bone graft donor as Amy's. In the scene where they are analyzing the bone from Ms. DeMarco, Zach says she 'died of lung cancer 2 months ago.' Less than 10 seconds later, Booth says that she 'never smoked a cigarette in her whole life, only to die of lung cancer 8 months ago.' (00:14:50)
Two Bodies in the Lab - S1-E15
Continuity mistake: Booth, Hodgins, and the police are gathered outside the abandoned building and are discussing tactics. Booth has a medal around his neck. It pops in and out of his jacket between shots. (00:37:00)
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.