<prompt> The mucoperichondrial flap in septoplasty is made onAlar cailageSeptal cailageMaxilary spineSphenoidal spine  <response>: The mucoperichondrial flap is elevated on one side over the quadrangular septal cailage.Indication for surgery in DNS- Symptomatic DNS- nasal obstruction, epistaxis, headache, recurrent sinusitis.In SMR, the mucoperichondrial flap is elevated on both the sides of the septal cailage.Incision- Freers incision in septoplasty, Killians in SMR.Ref: Hazarika; 3rd ed; Page no: 283 