<Table> <Tr> <Th_colspan="2"> Lip plate </Th> </Tr> <Tr> <Td_colspan="2"> Contemporary Mursi woman showing pierced lower lip without a lip plate </Td> </Tr> <Tr> <Th> Nicknames </Th> <Td> Labret, lip plate, lip disc </Td> </Tr> <Tr> <Th> Location </Th> <Td> Omo River, Ethiopia </Td> </Tr> <Tr> <Th> Jewelry </Th> <Td> Clay or wood disc </Td> </Tr> </Table> <Tr> <Th_colspan="2"> Lip plate </Th> </Tr>

What is the purpose of a lip plate