<Tr> <Td> medial cord </Td> <Td> medial root of the median nerve </Td> <Td> C8, T1 </Td> <Td> all of the flexors in the forearm except flexor carpi ulnaris and that part of flexor digitorum profundus that supplies the 4th and 5th digits <P> 1st and 2nd lumbrical muscles . muscles of the thenar eminence by a recurrent thenar branch </P> </Td> <Td> portions of hand not served by ulnar or radial, i.e skin of the palmar side of the thumb, the index and middle finger, half the ring finger, and the nail bed of these fingers </Td> </Tr> <P> 1st and 2nd lumbrical muscles . muscles of the thenar eminence by a recurrent thenar branch </P> <Tr> <Td> medial cord </Td> <Td> medial cutaneous nerve of the arm </Td> <Td> C8, T1 </Td> <Td> - </Td> <Td> front and medial skin of the arm </Td> </Tr> <Tr> <Td> medial cord </Td> <Td> medial cutaneous nerve of the forearm </Td> <Td> C8, T1 </Td> <Td> - </Td> <Td> medial skin of the forearm </Td> </Tr>

The highlighted structure contains contributions from which cord(s) of the brachial plexus