The Tongue: Motor innervation of the tongue is the hypoglossal or xii cranial nerve. Pain and temerature (somatosensation) is innervated by the trigeminal or v cranial nerve. Taste (special visceral sensation) is innervated by the chorda tympani which is supplied by the facial or vii cranial nerve in the anterior 2/3rd of the tongue and the glossopharyngeal or ix cranial nerve in the posterior 1/3rd.
Answered 3/30/2014
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For sensory: Cn vii to the tongue is for sensory function (taste, feel) along with cn v. Motor function (moving tongue) is governed by cn xii.
Answered 3/30/2014
4.3k views
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