thoracodorsal
adjective medical specialized uk/ˌθɔː.rə.kəʊˈdɔː.səl/ us/ˌθɔːr.ə.koʊˈdɔr.səl/
胸背的
relating to the chest and upper spine (= the column of bones in the back)
The thoracodorsal nerve supplies one of the muscles of the back. 背部的一条肌肉受胸背神经支配。