A patient has a painful ulcer on the tip of his tongue. Which of the following cranial nerves carries the pain sensation he experiences?
Correct Answer: V
Description: The innervation of the tongue is complex. The mandibular division of the trigeminal nerve (V3) carries general somatic sensation from the anterior two-thirds of the tongue. The maxillary division carries somatic sensation from the palate, upper gums, and upper lip. The facial nerve carries taste from the anterior two-thirds of the tongue. The glossopharyngeal nerve carries sensation and taste from the posterior one-third of the tongue.
Category:
Physiology
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