<prompt> Taste sensation from anterior part of tongue is mediated by:10th CN7th CN12th CN5th CN  <response>: Ans: b 7th CN Ref: Ganong, 22nd ed, p. 189Taste sensation from anterior 23 is by chorda tympani which is a branch of facial nerve.Taste sensation:Anterior 23 -- Chorda tympaniPosterior 13 Circumvallate papillae -- GlossopharyngeaPosterior most part VagusPalate -- FacialGeneral sensation of tongue:Anterior 23 -- Lingual 5th CNPosterior 13 -- GlossopharyngealNucleus tractus solitarius:Fibres of 7, 9 10 associated with taste sensation ends in this nucleus which is present in medulla. 