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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)
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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 Science in the Physicist - S4-E19
Visible crew/equipment: When Angela gets hits in the face with a frozen turkey, Cam rushes over to her and bends over to see if she is OK. When she does, her mic pack is visible on the waistband of her skirt. (00:19:00)
Visible crew/equipment: When Bones, Hodgins, Cam and Vincent work out the victim was hit twice and it's murder, a lime green tape marker is visible between Vincent's feet. (00:34:20)
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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 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)
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.