<Tr> <Td_colspan="7"> Sphincter ani </Td> </Tr> <Tr> <Td> externus </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> S4 and twigs from inferior anal nerves of pudendal nerve </Td> <Td> keep the anal canal and anus closed, aids in the expulsion of the feces </Td> <Td> </Td> </Tr> <Tr> <Td> internus </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> pudendal nerve </Td> <Td> keep the anal canal and anus closed, aids in the expulsion of the feces </Td> <Td> </Td> </Tr> <Tr> <Td_colspan="7"> Superficial perineal pouch </Td> </Tr>

Where are the skeletal muscles found in the body