Question

Which cranial nerve provides somatosensation to the posterior 1/3rd of the tongue?

1) Olfactory nerve (CN I)
2) Optic nerve (CN II)
3) Oculomotor nerve (CN III)
4) Glossopharyngeal nerve (CN IX)

Answer 1

The glossopharyngeal nerve (CN IX) provides somatosensation to the posterior one-third of the tongue.

Step-by-step explanation:

The glossopharyngeal nerve (CN IX) provides somatosensation to the posterior one-third of the tongue.