The Finger in the Nest - S4-E4
Character mistake: Hodgins discovers sap from a Japanese cherry tree on the bone from the nest. When the new graduate assistant suggests that it is one of the cherry trees at the Jefferson Memorial, Hodgins is skeptical of the information. In reality everyone who has lived in DC knows about the Japanese cherry trees at the memorial. They have an entire festival attributed to it every year and it practically shuts down the city with tourists. Hodgins should have known about the trees to begin with. (00:01:45)
The Finger in the Nest - S4-E4
Continuity mistake: Bones throws the blue ball for Gladys and has her hands down by her waist. Camera changes and one hand is now up by her head. (00:17:30)
The Finger in the Nest - S4-E4
Continuity mistake: When Hodgins and the intern are discussing the car Hodgins purchased as a kid, Hodgins has his right arm scooping stuff into his sieve. Camera changes and now he is sifting through the stuff with his left hand. (00:28:20)
The Finger in the Nest - S4-E4
Continuity mistake: Booth asks to hear Schatz bark, the owners hand moves from petting the dog to in his lap holding the chain between shots. (00:11:10)
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.