31 pairs spinal nerves: 8 cervical, 12 thoracic, 5 lumbar, 5
nerve) 8对,cervical vertebra= 7胸神经(thoracic nerve) 12对
什么是长胸神经longthoracicnerve
31 pairs spinal nerves: 8 cervical, 12 thoracic, 5 lumbar, 5
brain 大脑 spinal cord脊髓 median nerve 正中神经 thoracic nerve