<prompt> Spinal cord in adults terminates at which level of veebrae?Upper border of L1Upper border of L3Lower border of L1Lower border of L3  <response>: Spinal cord in adults terminates at the lower border of the L1 veebra. In children , it usually terminates at the upper border of the L3 veebra. Structure Space Terminal extent Spinal cord at bih L3 upper border Spinal cord at 2 years L1 lower border Adult spinal cord L1 lower border Filum terminale 1st coccygeal segment Filum terminale internum, Dural sac S2 lower border Filum terminale externum 1st coccygeal segment Piameter 1st coccygeal segment Subarachnoid sheath and space, subdural space S2 lower border Cervical enlargement C3-T2 spinal segments Lumbar enlargement L1-S3 spinal segments Ref: Snells Clinical Neuroanatomy 8th edition Pgno: 136 