<prompt> Root value of thoracodorsal nerveC5,C6,C7C6,T1C6,C7,C8T1,T2  <response>: 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. 