Radial nerve • All muscles in posterior  compartment of arm    and forearmUlnar nerve• Most intrinsic muscles in hand• Flexor carpi ulnaris and medial  half of flexor digitorum profundus  in forearmMusculocutaneous nerve• All muscles in anterior  compartment of armMedian nerve• Most flexors in forearm• Thenar muscles in handABUlnar nerveMedian nerveRadial nerve• Inferior lateral cutaneous    nerve of arm• Posterior cutaneous    nerve of arm• Posterior cutaneous    nerve of forearmMusculocutaneous nerve• Lateral cutaneous    nerve of forearmRadial nerve• Superficial branchPosteriorT1T2Ulnar nerveMedian nerveRadial nerve• Inferior lateral    cutaneous    nerve of armAxillary nerve• Superior lateral    cutaneous    nerve of armAxillary nerve• Superior lateral    cutaneous    nerve of armMusculocutaneous nerve• Lateral cutaneous    nerve of forearmRadial nerve• Superficial branchAnteriorT1T2