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					Originally Posted by Hank Chinaski  a void has no inner sides. is this a trick question?
 do you mean the outer walls that define the mouth? I won't trouble you with the latin formal names, but essentially you speak of the mucous membranes of the cheeks and palate, or the roof.
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 I suppose they could put a lot more techincal jargon in the jury charge but if you say "mouth" everyone is gonna known what you mean.