Question: Where does the needle go for a spinal tap?
Disambiguated questions and answers: question: Where does the needle go for a spinal tap in a newly born baby?
Where does the needle go for a spinal tap in an adult?
answer: below the conus medullaris at L3/L4 or L4/L5 interspinous levels
between the lumbar vertebrae L3/L4, L4/L5 or L5/S1
Natural Questions answer: into the spinal canal (from the Wikipedia article "Lumbar puncture")