Cranial Nerves

Question 1

Name the 12 cranial nerves.

Answer 1

I olfactory
II optic
III oculomotor
IV trochlear
V trigeminal
VI abducens
VII facial
VIII vestibulocochlear (acoustic)
IX glossopharyngeal
X vagus
XI spinal accessory
XII hypoglossal

Question 2

What are the 6 types of fibers carried by cranial nerves?

Answer 2

1. somatic motor
2. visceral motor
3. somatic sensory
4. visceral sensory
5. special sensory
6. branchial motor

Question 3

What are the 8 sensory ganglia of the cranial nerves?

Answer 3

1. semilunar
2. geniculate
3. spiral
4. vestibular
5. inferior & superior of CN IX
6. inferior & superior of CN X

Question 4

What are the 5 parasympathetic ganglia of the cranial nerves?

Answer 4

1. ciliary
2. pterygopalatine
3. submandibular
4. otic
5. intramural (in wall of organ)

Question 5

What are the fiber types of the parasympathetic ganglia?

Answer 5

visceral motor

Question 6

With which cranial nerve is the semilunar ganglion associated?

Answer 6

CN V

Question 7

With which cranial nerve is the geniculate ganglion associated?

Answer 7

CN VII

Question 8

With which cranial nerve is the spiral ganglion associated?

Answer 8

CN VIII

Question 9

With which cranial nerve is the vestibular ganglion associated?

Answer 9

CN VIII

Question 10

With which cranial nerve are the inferior & superior sensory ganglia associated?

Answer 10

CN IX has a pair; CN X has a pair

Question 11

What is the mnemonic for remembering which cranial nerves are sensory and which are motor?

Answer 11

Some Say Marry Money But My Brother Says Big Brains Matter Most

Question 12

What cranial nerve innervates the palate, pharynx, and larynx?

Answer 12

X - vagus

except stylopharyngeus muscle

Question 13

What nerve innervates the stylopharyngeus muscle?

Answer 13

IX - glossopharyngeal

Question 14

What nerve innervates the tongue (motor)?

Answer 14

XII - hypoglossal

except palatoglossus - X

Question 15

What nerves innervate the suprahyoid muscles?

Answer 15

C1
VII
nerve to mylohyoid

Question 16

What nerves innervate the infrahyoid muscles?

Answer 16

ansa cervicalis (C1, C2, C3)
C1

Question 17

What nerves innervate the styloid muscles?

Answer 17

stylohyoid: VII
stylopharyngeus: IX
styloglossus: XII

Question 18

What nerve innervates the muscles of mastication?

Answer 18

V3 (mandibular branch of trigeminal)

Question 19

What are the nerves of taste?

Answer 19

palate: VII
anterior 2/3 of tongue: VII
posterior 1/3 of tongue: IX
base of tongue & epiglottis: X

Question 20

What cranial nerve gives rise to the preganglionic parasympathetic fibers to sphincter pupillae & ciliary muscle?

Answer 20

III

Question 21

What cranial nerve gives rise to the preganglionic parasympathetic fibers to lacrimal gland?

Answer 21

VII

Question 22

What cranial nerve gives rise to the preganglionic parasympathetic fibers to mucous glands of nasal cavity & paranasal sinuses?

Answer 22

VII

Question 23

What cranial nerve gives rise to the preganglionic parasympathetic fibers to minor salivary glands of palate & upper mucosa?

Answer 23

VII

Question 24

What cranial nerve gives rise to the preganglionic parasympathetic fibers to submandibular gland, sublingual gland, and minor salivary glands of floor of mouth?

Answer 24

VII

Question 25

What cranial nerve gives rise to the preganglionic parasympathetic fibers to parotid gland?

Answer 25

IX

Question 26

What cranial nerve gives rise to the preganglionic parasympathetic fibers to mucous glands of pharynx & larynx?

Answer 26

X

Question 27

If you have a middle ear infection, what nerve carries the pain sensation?

Answer 27

IX

Question 28

What special sensory function does the glossopharyngeal nerve have?

Answer 28

taste for posterior 1/3 of tongue

Question 29

What general sensory function does the glossopharyngeal nerve have?

Answer 29

posterior 1/3 of tongue, inner surface of TM, tympanic cavity, auditory tube, pharynx

Question 30

What visceral sensory function does the glossopharyngeal nerve have?

Answer 30

carotid body & sinus

Question 31

What branchial motor function does the glossopharyngeal nerve have?

Answer 31

stylopharyngeus muscle

Question 32

What do the carotid body & carotid sinus sense?

Answer 32

carotid body: O2 | carotid sinus: BP

Question 33

What is innervated by the hypoglossal nerve?

Answer 33

All intrinsic and extrinsic muscles of the tongue except palatoglossus (vagus)

Question 34

What is innervated by the spinal accessory nerve?

Answer 34

sternocleidomastoid, trapezius

Question 35

With which nerve is the ciliary ganglion associated?

Answer 35

III

Question 36

With which nerve is the pterygopalatine ganglion associated?

Answer 36

VII

Question 37

With which nerve is the submandibular ganglion associated?

Answer 37

VII

Question 38

With which nerve is the otic ganglion associated?

Answer 38

IX

Question 39

With which nerve is the intramural (in wall of organ) associated?

Answer 39

X