Question

which cranial nerves are not involved in carrying taste information from the tongue into the central nervous system (cns)?

facial nerves (cn vii)

hypoglossal nerves (cn xii)

vagus nerves (cn x)

glossopharyngeal nerves (cn ix)

Explanation:

The hypoglossal nerve (CN XII) is mainly responsible for motor function of the tongue (controlling tongue muscles for movement like protrusion, retraction, etc.). It does not carry taste information. The facial nerve (CN VII) carries taste from the anterior two - thirds of the tongue, the glossopharyngeal nerve (CN IX) from the posterior one - third, and the vagus nerve (CN X) from a small area of the epiglottis region (which is also related to taste in a very minor sense for some taste modalities in that area).

Answer:

Hypoglossal nerves (CN XII)