Continuity mistake: When Angela is in the diner with Gordon, she has her drink in her hand. When the shot changes, her glass is on the table. (00:23:40)
Continuity mistake: When Novarro, Booth and Bones are looking at the drain, there are a few marks on the floor by Booth's feet. In the close up these marks have disappeared. (00:27:00)
Continuity mistake: When realising that the victim wanted "an averaged sized woman", Booth has a folder by his mouth. Camera cuts and it's gone. (00:34:40)
Continuity mistake: When Bones is examining the ring, the position of the ring and her fingers is constantly changing. (00:37:05)
The Gamer in the Grease - S5-E9
Continuity mistake: Fisher is putting a glove on his right hand when Dr Saroyan walks in. It cuts between them a few times, then we see him turning to the table to explain about the bones and neither of his hands are gloved. A short while later he turns to put on gloves - he regloves his right hand, it goes back to Dr Saroyan for a second, then back to him turning towards the table and both hands are now gloved. (00:17:20 - 00:18:20)
The Gamer in the Grease - S5-E9
Continuity mistake: At the end, Booth asks what the flaw is in his reasoning. When he does he's holding up a quarter. When the shot changes his hand is now against his head. (00:39:50)
Continuity mistake: Cam points out near the start that Booth has evidence in his hair. Booth then raises his hand as if to find it and raises it up near the top of his head. When the camera cuts his hand however is near his ear. (00:07:20)
Continuity mistake: When we see Wendal and Angela in bed, Wendal has his arm up by his head in one shot and lowered in the next. (00:08:30)
Continuity mistake: Wendal says he's worried about Hodgins not knowing about him and Angela. When he does, he's stroking Angela's shoulder with his finger tips in one shot but got his whole hand on her shoulder in the next. (00:08:50)
Continuity mistake: The amount of blood on the breeze block changes between shots when Bones first looks at it. (00:18:50)
Continuity mistake: When Booth gets the print off the block, the tape has loads of black charcoal dust on it. The camera now zooms in and shows a distinctive clear finger print with no excess dust. (00:20:00)
The Proof in the Pudding - S5-E12
Continuity mistake: When Booth is talking to his boss at the diner, the latter is chewing on his mouth full of food when shot from the right, and has an empty mouth when shot from the left. This happens every time the shot changes angles. (00:11:30)
The Proof in the Pudding - S5-E12
Continuity mistake: When Booth is tackled upon entering the lab, his gun is shown to go flying along the floor towards the doors. When the shot changes, a guard who tackled Booth has the gun in his hand. (00:16:10)
The Proof in the Pudding - S5-E12
Continuity mistake: When telling Hodgins about the pregnancy, Angela's arms are constantly changing position between camera angles. (00:19:25)
The Proof in the Pudding - S5-E12
Continuity mistake: At the end when Booth is hugging Brennan after the bone sinks, Brennan's hands go from being clenched to being open to being clenched again. (00:37:00)
The Proof in the Pudding - S5-E12
Continuity mistake: When Bones confirms the bones in the lab were not JFK's she has a coffee cup in her hand. When the shot changes she now has a fork in her hand. (00:38:08)
The Proof in the Pudding - S5-E12
Continuity mistake: At the end in the diner, Angela says about the body not being JFK, When she does Hodgins has his fork up by his mouth. Camera cuts and it's lowered. (00:38:20)
The Dentist in the Ditch - S5-E13
Continuity mistake: Booth is telling Bones and Sweets that the victim was married for 5 years. When he does, Bones has her hand by her mouth in one shot and down on her notepad in the next. (00:28:40)
The Devil in the Details - S5-E14
Continuity mistake: Hodgens hits himself on the left side of his head with the nunchucks, then later on he closes his uninjured right eye to look at the computer screen with his injured left eye.
The Parts in the Sum of the Whole - S5-E16
Continuity mistake: In this episode, Booth and Bones are telling Sweets about their "real first case" together - the case where they actually met for the first time. During this episode, Booth, Bones, and Angela take some evidence to Caroline, and Booth introduces them both (most importantly Brennan) to Caroline. However, in season 1, episode 19, "The Man in the Morgue", (which would have taken place after this initial first meeting) when Brennan is accused of murder in New Orleans, Booth has Caroline fly to NOLA to be Brennan's lawyer, and he introduces the two of them. If they had already been introduced during the first case Booth and Brennan worked on together, they would not have needed to be introduced here; they would have already known one another.
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.