CN IX (Glossopharyngeal)

Question 1

CN IX is what type of N?

Answer 1

Mixed Nerve

Question 2

CN IX contains what?

Answer 2

Motor fibers from nucleus ambiguous to stylopharyngeus

Question 3

CN IX provides sensation from posterior 1/3 of tongue and pharynx to what?

Answer 3

Sensory nucleus of CN V

Question 4

CN IX carries what from posterior 1/3 of tongue to the nucleus solitaries in medulla?

Answer 4

Taste

Question 5

CN IX also carries what to parotid gland via otic ganglion of CN V3 from inferior salivary nucleus in medulla?

Answer 5

Parasympathetic innervation

Question 6

CN IX leaves the skull via?

Answer 6

Jugular Foramen

Question 7

The carotid branch of CN IX runs down on the internal carotid A to supply what?

Answer 7

Carotid Body (chemoreceptors)
Carotid Sinus (Baroreceptors)