<prompt> The segmental level of spinal anaesthesia depends on:Volume of the local anaesthetic injectedSpecific gravity of the local anaesthetic solutionPosture of the patientAll of the above  <response>: Factors affecting the height of block :- -- Volume of drug -- Baricity Ratio of specific gravity of an agent to that of CSF. -- Position of the patient -- Intra-abdominal pressure -- Curvature of spine Factors affecting duration of block :- -- Dose -- Concentration - - Drug LA used -- Added vasoconstrictors 