<prompt> Arrange the following structures in the order they are pierced during lumbar puncture.SEQUENTIAL ARRANGEMENT aEpidural space bInterspinous ligament cSupraspinous liament dLigamentum flavum eSubarachnoid spacea-b-c-d-eb-c-d-a-ed-c-b-a-ec-b-d-a-e  <response>: Lumbar puncture in adult: Pt lying on side with maximally flexed spine A line taken between highest points of axis at L4 level Skin cleaned anesthetised Spinal needle inseed between L4 - L5 veebrae Structures pierced: skin, fat, supraspinous interspinous ligaments, ligamentum flavum, epidural space, dura, arachnoid, subarachnoid space. CSF 