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Best Answer: There are three cranial nerve involved in taste... The Facial Nerve carries information from the front 2/3 of the tongue. (Cranial Nerve VII) The Glossopharyngeal Nerve carries information from the back 1/3 of the tongure (Cranial Nerve IX) The Vagus Nerve also carries some taste information, but it's a minor component (Cranial Nerve X).
These neurons generate action potentials in response to the taste bud's receptor potentials. The peripheral processes of these neurons follow the lingual nerve and then chorda tympani to the petrous portion of the temporal bone (similar to the path followed by the efferent visceral motor fibers).