<prompt> Structure forming the Posterior 13 of veebral canal is JIPMER May 2019Posterior Longitudinal LigamentLigamentum FlavumPosterior 13 of Veebral BodyPosterior 13 of Interveebral Disc  <response>: At tip of spine of veebra there is Supra-Spinous Ligament Inter-Spinous Ligament bw two spines Ligamentous Flavum - ligament connecting lamina of veebral arch superiorly to next adjacent veebra gives elasticity to veebral canal forming post 13rd of veebral canal. 