Cranial Nerves IX and X

Question 1

motor fibers of CN IX originate here

Answer 1

in the nucleus ambiguous

Question 2

CN IX innervates this muscle

Answer 2

stylopharyngeus muscle

Question 3

the stylopharyngeus muscle has this action

Answer 3

elevates pharynx and larynx and raises soft palate

Question 4

CN X is important in these actions

Answer 4

swallowing and articulation

Question 5

unilateral paralysis of CN X causes

Answer 5

paralysis of soft palate, pharynx, and larynx on the affected side

Question 6

complete bilateral paralysis of this nerve is not compatible with life

Answer 6

CN X

Question 7

aphonia

Answer 7

loss of voice

Question 8

dysarthria

Answer 8

faulty articulation

Question 9

anarthria

Answer 9

no articulation

Question 10

dysphagia

Answer 10

fault swallowing

Question 11

aphagia

Answer 11

no swallowing

Question 12

hypernasal

Answer 12

increased air entering nasal cavity

Question 13

hyponasal

Answer 13

decreased air entering nasal cavity

Question 14

disorders of CN IX are uncommon due to

Answer 14

bilateral innervation

Question 15

disorders of CN IX produce

Answer 15

difficulty swallowing

Question 16

sensory fibers of CN X have their cells in this ganglion

Answer 16

jugular ganglion

Question 17

CN IX travels in this foramen

Answer 17

jugular foramen

Question 18

CN X travels in this foramen

Answer 18

jugular foramen