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Tongue Taste Innervation — NDEB AFK MCQ

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EasyBiomedical SciencesTongue Taste InnervationNDEB AFK

Which nerve provides taste sensation to the posterior third of the tongue?

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Correct answer: D — Glossopharyngeal nerve (CN IX)

CN IX (glossopharyngeal nerve) provides both general sensory and special taste (gustatory) innervation to the posterior third of the tongue. CN VII (chorda tympani) provides taste to the anterior two-thirds. CN X (vagus) provides taste to the epiglottic region. CN V3 provides general sensation to the anterior two-thirds via the lingual nerve.

Reference: Moore – Clinically Oriented Anatomy, 9th ed., 2019