The Method in the Madness - S8-E5
Continuity mistake: When Sweets is staying at Booth's and Brennan's house, he comes downstairs after taking a bath and, as he turns, his shoulders are shown without the scars he has in another episode.
The Party in the Pants - S8-E22
Continuity mistake: At the reception for Seeley's mother's wedding during the bouquet toss, when the bouquet is in the air the stems are bound in white ribbon, when Dr. Brennan catches the bouquet the stems are loose.
The Party in the Pants - S8-E22
Continuity mistake: When Sweets is talking to the victim's girlfriend, she has a strand of hair in her hand from the rear angle and nothing in her hand in the front angle. (00:15:50)
The Party in the Pants - S8-E22
Continuity mistake: The body falls on a foreman who gets covered in blood. When she scrambles away the blood has gone. (00:03:05)
The Maiden in the Mushrooms - S8-E21
Continuity mistake: When the guy finds the skull his grip changes between shots. (00:02:10)
The Twist in the Plot - S8-E13
Continuity mistake: When Bones is watching Booth make his video for Christine, in some shots she's stood up straight, in others she's leaning against the wall. (00:38:00)
Continuity mistake: When Hodgins carries the first box of roaches to the remains, the positions of the roaches changes instantly. In one shot they are all over the side of the tank, in the next shot they are not. (00:21:30)
Continuity mistake: When Bones scans the pod you can see the skull in the pod has its jaw open. However the skull picture on the scanner has its jaw closed.
The Method in the Madness - S8-E5
Continuity mistake: When Bones starts to explain about the Aztecs, Hodgins is holding a boot upright. Camera changes and the boot is now upside down. (00:06:40)
The Method in the Madness - S8-E5
Continuity mistake: At the start, Bones is putting her one glove on. Camera changes and both gloves are now on. (00:03:15)
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.