Visible crew/equipment: When in the interrogation room after it is determined that The Man in the SUV is a victim, you can see a camera shadow on the wall by Bones. This shadow moves when no-one else does. (00:15:00)
The Girl in the Gator - S2-E13
Visible crew/equipment: At the start, the ice cream van stops and Booth shoots the clown. If you look at the road there is an orange tape marker visible where the van stops. (00:02:15)
High Treason in the Holiday Season - S11-E8
Visible crew/equipment: While they're doing a full workup of the room at the Riverbanks Inn, just as Hodgins mentions that Ryan Gill has been in the room like an elephant in a china shop, when Agent Aubrey walks in the T-mark can be seen on the carpet. (In the Netflix version the T-mark has been edited out).
The Finger in the Nest - S4-E4
Visible crew/equipment: After Hodgins examines the victim's car at the FBI, the next scene has Booth's truck driving down a country road, passing the camera in a close-up. As it passes the camera, reflected in the door is the cameraman's torso & arm. (00:14:30)
The Man with the Bone - S1-E18
Visible crew/equipment: W|hen Booth talks to to a fisherman on the docks, we can see the camera rig rolling behind him, by the rig's shadow against the pile of equipment on the dock. (00:17:25)
The Boneless Bride in the River - S2-E16
Visible crew/equipment: As we see Sully sail off into the sunset on his own, a hand and head can be seen on the boat with him despite a key point being he is on his own. (00:40:40)
The Girl in the Fridge - S1-E8
Visible crew/equipment: When Bones says about her professor wanting to see the equipment there is a tape marker visible on the floor under the remains. (00:09:20)
Visible crew/equipment: When Bones starts the interrogation with Rulz, you can see a shadow moves over Rulz' lower body despite no one moving. (00:32:55)
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.