<prompt> In spinal anaesthesia the drug is deposited between:Dura and arachnoidPia and arachnoidDura and veebraInto the cord substance  <response>: Local anesthetic is injected into sub arachnoid space between L2-3or L3-4 below the lower end of spinal cord. The drug acts on nerve roots. From padmaja 4th edition Page no 205 