Anatomy Upper limb a44a527e Root value of thoracodorsal nerve A C5,C6,C7 B C6,T1 C C6,C7,C8 D T1,T2 High-Yield Explanation Thoracodorsal nerve or long thoracic nerve arises from brachial plexus. Its nerve value is C5, C6 and C7. REF:BDChaurasia 7th edition Page no: 57.