Innervation of tongue/special sense of taste

Question 1

CN XII: hypoglossal

Answer 1

• somatic motor to mm of tongue

Question 2

CN IX: glossopharyngeal

Answer 2

• somatic sensory/taste from posterior 1/3 of tongue

Question 3

lingual n

Answer 3

• off mandibular (V3)

- somatic sensory from anterior 2/3 of tongue

Question 4

chorda tympani

Answer 4

• from facial n

- taste from anterior 2/3 of tongue

Question 5

greater petrosal n

Answer 5

• from facial n

- special sense of taste from palate via palatine nn

Question 6

internal laryngeal n

Answer 6

• from vagus n

- somatic sensory and taste from tongue near epiglottis