The Beaver in the Otter - S4-E24
Visible crew/equipment: When Aristoo first walks up on to the platform a black X is visible on the floor. (00:03:30)
Continuity mistake: When Booth and Bones are shown the Pimp's scar, the towel the guy is holding switches hands instantly. (00:16:30)
Continuity mistake: When in the diner after going to the Japanese tea room, Booth has his fingers rubbing his temple. Shot changes and his hand is lowered. (00:11:15)
The Double Death of the Dearly Departed - S4-E22
Continuity mistake: When Bones and Cam drive off with the corpse in the car, the bumper reflects a studio parking lot. Not the suburban street they were just on. (00:12:10)
Continuity mistake: When interviewing Lexi she puts her arms up and plays with her hair in one shot but then in the next her arms are down. (00:28:30)
The Science in the Physicist - S4-E19
Visible crew/equipment: When Booth stands up to arrest Scotty and orange tape marker is visible on the floor. (00:37:30)
The Doctor in the Den - S4-E18
Continuity mistake: Around the 37-minute mark Bones approaches Cam with an update on the case. When she does, Cams position alters between shots. A hand suddenly appears by her mouth/chin. (00:37:30)
The Doctor in the Den - S4-E18
Continuity mistake: When Hodgins approaches Bones, Cam and Angela who are having a coffee, the position of Angela and Bones changes instantly. (00:30:50)
The Doctor in the Den - S4-E18
Continuity mistake: When Booth is questioning Brandon for the first time, Booth and Brandon's positions in the interview room are different to the live feed behind the glass. (00:16:40)
The Doctor in the Den - S4-E18
Continuity mistake: When Angela first walks onto the platform at the start and starts flirting with Clark, the way she holds her folder changes between shots. (00:03:30)
The Salt in the Wounds - S4-E17
Continuity mistake: The way Booth's hands are clasped when talking to Clint at the end in the diner changes between shots. (00:39:00)
The Salt in the Wounds - S4-E17
Continuity mistake: When Sweets is in the chiropractor's office, the doctor is pulling at Sweets' arms across his chest in one shot but in the next his arms are by his side. (00:35:10)
The Salt in the Wounds - S4-E17
Continuity mistake: When Bones and Angela are talking over lunch, Angela has her hand up by her head on one shot and then reaching out and holding the salt in the next. (00:20:40)
The Salt in the Wounds - S4-E17
Continuity mistake: When lowering the remains into the tank, Aristoo's grip on the remains changes instantly. (00:11:05)
Visible crew/equipment: When Booth checks out of the silver sports car, two yellow tape markers are visible between the two cars. (00:23:35)
The Princess and the Pear - S4-E15
Continuity mistake: When Hodgins finds the sword the plastic wrap is very wide around the hilt. When he holds the sword up, the plastic is flush with the hilt. (00:20:40)
Continuity mistake: At the end, Parker has blood on his cheek that disappears almost instantly. (00:38:00)
Continuity mistake: Hodgins goes from holding the jewellery found in the fish tank with one hand to two hands. (00:34:50)
Continuity mistake: Hodgins takes the lid off the fish blender twice when trying to find out what killed the fish. (00:32:00)
Continuity mistake: The blood drips on the glass in front of Bones near the end has 2 distinctive lines of blood. In the following shots the blood pattern is different. (00:27:20)
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.