<Tr> <Th> Artery </Th> <Td> Inferior pancreaticoduodenal artery, Superior pancreaticoduodenal artery </Td> </Tr> <Tr> <Th> Vein </Th> <Td> Pancreaticoduodenal veins </Td> </Tr> <Tr> <Th> Nerve </Th> <Td> celiac ganglia, vagus </Td> </Tr> <Tr> <Th_colspan="2"> Identifiers </Th> </Tr>

They pyloric sphincter is located between the duodenum and what structure