All round nerve is bulky be like rope shape , with elbow the feet nerve in trochlear canal and cervical bosom lock breed dash forward the neck nerve after flesh is shallow feel the most easily , qualitative hard 四周神经粗大如绳索状，以肘部滑车管中的尺神经及颈部胸锁乳突肌后的颈神经浅支最易摸到，质坚硬。
