CN 3 - Herring

Question 1

the cavernous sinuses are located on either side of the

Answer 1

sella turcica

Question 2

the cavernous sinuses are laterally bound by

Answer 2

dura mater

Question 3

what is in the middle of the cavernous sinuses

Answer 3

CN VI
internal carotid artery (& postGS fibers of internal carotid plexus)

Question 4

what is along the lateral wall of the cavernous sinuses

Answer 4

CN III
CN IV
CN V1
CN V2

Question 5

The primary cranial
nerve for somatic sensory (pain, temperature,
proprioception, & touch) innervation from the head

Answer 5

CN V

Question 6

Somatic motor to the
muscles of mastication & pharyngeal arch 1 muscles

Answer 6

CN V

Question 7

For somatic sensory pathway of CN V, where are the 1st order cell bodies for touch, pain, and temp

Answer 7

trigeminal ganglion

Question 8

For somatic sensory pathway of CN V, what are the 3 peripheral processes of CN V

Answer 8

CN V1: ophthalmic
CN V2: maxillary
CN V3: mandibular

Question 9

For somatic sensory pathway of CN V, what are the central processes of CN V

Answer 9

trigeminal nerve (CN V)

Question 10

For somatic sensory pathway of CN V, what are the 2 2nd order cell bodies the central processes project to

Answer 10

main/chief/principal nucleus

spinal trigeminal nucleus

Question 11

For somatic sensory pathway of CN V, what is the main/chief/principal nucleus for

Answer 11

discriminative touch

Question 12

For somatic sensory pathway of CN V, what is the spinal trigeminal nucleus for

Answer 12

pain and temperature

Question 13

For somatic sensory pathway of CN V, 2nd order CBs send their axons to 3rd order CBs that are located where

Answer 13

VPM of thalamus

Question 14

For somatic sensory pathway of CN V, 3rd order cell bodies project to the

Answer 14

inferolateral portion of the postcentral gyrus

Question 15

For somatic sensory pathway of CN V, where are the 1st order CBs for proprioception

Answer 15

mesencephalic nucleus

Question 16

For somatic motor pathway of CN V, where are the LMNs

Answer 16

trigeminal motor nucleus

Question 17

For somatic motor pathway of CN V, what branch of CN V are the axons of LMNs located

Answer 17

CN V3

Question 18

CN V1 gets sensory (pain, temp, touch) from

Answer 18

skin at & superior to the eyes

eyeball

Question 19

CN V1 passes through the ________ from the orbit

Answer 19

superior orbital fissure

Question 20

after the superior orbital fissure what does CN V1 pass through to reach trigeminal ganglion

Answer 20

cavernous sinus

Question 21

Decreased (or abnormal) sensations of pain, temperature, & touch from
area of distribution is from a lesion of

Answer 21

CN V1, V2, V3

Question 22

CN V2 gets sensory (pain, temp, touch) from

Answer 22

Skin between the mouth &
the eyes

Maxillary sinus

Nasal cavity

Palate

Question 23

CN V2 passes through the

Answer 23

foramen rotundum

Question 24

after the foramen rotundum, CN V2 passes through _________ to reach trigeminal ganglion

Answer 24

cavernous sinus

Question 25

CN V3 gets sensory (pain, temp, touch) from

Answer 25

Skin along the region of the mandible Anterior 2/3rd tongue External ear

Question 26

CN V3 gets somatic motor to

Answer 26

muscles of mastication and pharyngeal arch 1 muscles

Question 27

CN V3 passes through __________ to reach trigeminal ganglion

Answer 27

foramen ovale

Question 28

Deviation of mandible to side of the lesion during mouth opening is due to a lesion of

Answer 28

CN V3

Question 29

Decreased (or abnormal) pain, temperature, touch sensation from the entire ipsilateral face (across the forehead, cheek, & chin) is due to a lesion of

Answer 29

CN V

Question 30

Lesion to one of the CN V divisions would only show a deficit along the

Answer 30

distribution of that division

Question 31

Mandible deviates to the same side as the lesion when opening the mouth would be due to a lesion of

Answer 31

CN V

Question 32

what are anesthetized for procedures involving the maxillary teeth & gingivae

Answer 32

CN V2 or branches of CN V2

Question 33

what are anesthetized for procedures involving the mandibular teeth & gingivae

Answer 33

Branches of CN V3

Question 34

The primary cranial nerve for somatic motor innervation to the muscles of facial expression & pharyngeal arch 2 muscles

Answer 34

CN VII

Question 35

Preganglionic parasympathetic fibers to all the major glands of the head except the parotid gland

Answer 35

CN VII

Question 36

Special sensory for taste from the anterior 2/3rd of the tongue

Answer 36

CN VII

Question 37

Somatic sensory from a small & variable area of the external ear

Answer 37

CN VII

Question 38

for the somatic motor pathway for CN VII, the axons project ________ only to the VENTRAL half of the facial motor nucleus. What does this affect?

Answer 38

contralaterally only ; muscles of the lower face (perioral)

Question 39

for the somatic motor pathway for CN VII, the axons project ________ only to the DORSAL half of the facial motor nucleus. What does this affect?

Answer 39

bilaterally ; muscles of the upper face (periorbital)

Question 40

for the somatic motor pathway for CN VII, where are the LMNs

Answer 40

facial motor nucleus

Question 41

for the somatic motor pathway for CN VII, the axons of LMNs exit the cranial cavity via ________ into the ________

Answer 41

internal acoustic meatus ; facial canal

Question 42

for the somatic motor pathway for CN VII, how do the axons of the LMNs exit the skull via

Answer 42

the stylomastoid foramen

Question 43

for the somatic motor pathway for CN VII, what are the 2 peripheral targets

Answer 43

muscle of facial expression & pharyngeal arch 2 including stapedius

Question 44

for the PS pathway for CN VII, where are the preGPS CBs

Answer 44

superior salivary nucleus

Question 45

for the PS pathway for CN VII, the facial nerve forms what 2 nerves

Answer 45

greater petrosal nerve chorda tympani nerve

Question 46

for the PS pathway for CN VII, the postGPS CBs are where

Answer 46

pterygopalatine ganglion submandibular ganglion

Question 47

for the PS pathway for CN VII, the postGPS fibers hitch a ride on branches of

Answer 47

CN V2 and CN V3

Question 48

for the PS pathway for CN VII, what are the peripheral targets (5 of them)

Answer 48

lacrimal, submandibular, sublingual, palatal, & nasal mucosal glands

Question 49

for the special sensory pathway for CN VII, where are the 1st order CBs

Answer 49

geniculate ganglion

Question 50

for the special sensory pathway for CN VII, the peripheral processes from palate and anterior 2/3rd tongue contribute to what 2 nerves

Answer 50

greater petrosal nerve chorda tympani nerve

Question 51

for the special sensory pathway for CN VII, the 2nd order CBs are in the

Answer 51

solitary nucleus

Question 52

for the special sensory pathway for CN VII, the 3rd order neurons are in the

Answer 52

VPM of the thalamus

Question 53

for the special sensory pathway for CN VII, the 3rd order neurons send their axons to the

Answer 53

insula (gustatory cortex)

Question 54

for taste. which CN/ganglion is associated with Anterior 2/3rd tongue & palate

Answer 54

CN VII (geniculate ganglion)

Question 55

for taste, which CN/ganglion is associated with posterior 1/3 tongue

Answer 55

inferior ganglion of CN IX

Question 56

for taste, which CN/ganglion is associated with the epiglottis

Answer 56

inferior ganglion of CN X

Question 57

for taste, where are the 2nd order CBs

Answer 57

solitary nucleus

Question 58

for taste, where are the 3rd order CBs and what do they project to

Answer 58

VPM of thalamus ; insula

Question 59

for the somatic sensory pathway for CN VII, the 1st order CBs are in the

Answer 59

geniculate ganglion

Question 60

for the somatic sensory pathway for CN VII, the 2nd order CBs are in the

Answer 60

spinal trigeminal nucleus

Question 61

for the somatic sensory pathway for CN VII, the 3rd order neurons are in the

Answer 61

VPM of the thalamus

Question 62

for the somatic sensory pathway for CN VII, the 3rd order neurons send their axons to the

Answer 62

inferolateral postcentral gyrus

Question 63

Ipsilateral facial muscle paralysis is due to a lesion of CN

Answer 63

CN VII

Question 64

Noises may seem louder than usual is due to a lesion of CN

Answer 64

CN VII

Question 65

Ipsilateral dry eye is due to a lesion of CN

Answer 65

CN VII

Question 66

dry mouth and abnormal taste are variable symptoms of a lesion to which CN

Answer 66

CN VII

Question 67

Which CN is only composed of special sensory fibers for hearing & for balance

Answer 67

CN VIII

Question 68

For CN VIII, each have their own 1st order cell bodies and separate central pathway through the brain. What 2 nerves is this referring to?

Answer 68

cochlear nerve vestibular nerve

Question 69

Vestibulocochlear nerve passes through the _______ of the temporal bone

Answer 69

internal acoustic meatus

Question 70

where are the 1st order CBs for the vestibular nerve

Answer 70

vestibular ganglion

Question 71

for the vestibular nerve, the 2nd order CBs are in the

Answer 71

vestibular nuclei of the brainstem

Question 72

which nerve is responsible for coordination of eye movements with head positioning

Answer 72

vestibular nerve

Question 73

which nerve is responsible for head, body, & limb posture

Answer 73

vestibular nerve

Question 74

where are the 1st order CBs in the cochlear nerve

Answer 74

cochlear (spiral) ganglion

Question 75

where are the 2nd order CBs in the cochlear nerve

Answer 75

cochlear nuclei of the brainstem

Question 76

which nerve is responsible for ultimately most of the auditory pathway that projects to the auditory cortex (temporal lobe)

Answer 76

cochlear nerve

Question 77

issues with balance or vertigo is due to a lesion of which nerve

Answer 77

vestibular nerve

Question 78

deafness (complete or partial) is due to a lesion of which nerve

Answer 78

cochlear nerve