Anaesthesia in the vertebral canal Skin Subcutaneous fascia Supraspinal lig. Interspinal lig. Yellow lig. Lower end Of spinal cord Needle Draw cerebrospinal fluid puncture From the vertebral canal For lab examination Copy Right- Hongqi ZHANG-Department of Anatomy-Fudan UniversityCopy Right‐ Hongqi ZHANG‐Department of Anatomy‐Fudan University Copy Right‐ Hongqi ZHANG‐Department of Anatomy‐Fudan University Anaesthesia in the vertebral canal L1 Draw cerebrospinal fluid From the vertebral canal For lab examination Lower end Of spinal cord Needle puncture Skin Subcutaneous fascia Supraspinal lig. Interspinal lig. Yellow lig