On the corresponding relationship between spinal cord segments and vertebrae

C 1-4 corresponds to the same number of vertebrae, C5-8 and T 1-4 correspond to 1 vertebrae, T5-8 corresponds to 2 vertebrae, T9- 12 corresponds to 3 vertebrae, and 5 lumbar segments correspond to 10-60. The spinal nerve below the conus medullaris is called cauda equina, and the lumbar puncture is at 3-4 and 4-5 to avoid damaging the spinal cord.