Brainscape's Knowledge GenomeTM


Top Flashcards (Certified)
All Flashcards

CVM710: Anatomy > Exam 4: CN V and VII (35) > Flashcards

Exam 4: CN V and VII (35) Flashcards

1
Q

what CN are only sensory

A

CN I(olfactory), II(optic), VIII(vestibulochoclear)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

what CN are sensory/ motor

A

Glossopharyngeal (IX)
Trigeminal (V)
Vagus (X)
Facial (VII)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

what CN are only motor

A

Oculomotor (III)
Trochlear (IV)
Abducent (VI)
Accessory (XI)
Hypoglossal (XII)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Autonomic ganglia (CN’s ___,___,__,__

A

CN’s III, VII, IX, X

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

NAME THE GANGLION
post-synaptic fibers innervate intrinsic muscles of the eye (ciliary muscles, sphincter pupillae, dilator pupillae)

A

Ciliary ganglion (oculomotor nerve)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

NAME THE GANGLION

post-synaptic fibers innervate lacrimal, nasal, and palatine glands

A

Pterygopalatine (a.k.a., sphenopalatine) ganglion (facial nerve)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

NAME THE GANGLION
post-synaptic fibers innervate sublingual
and mandibular salivary glands

A

Mandibular ganglion (facial nerve)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

NAME THE GANGLION
post-synaptic fibers innervate parotid
and zygomatic salivary glands

A

Otic ganglion (glossopharyngeal nerve)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

NAME THE GANGLION

located in walls of thoracic, abdominal and pelvic viscera

A

Terminal (a.k.a., visceral) ganglia (vagus nerve and branches)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

what ganglion synapse between pre and post (GSE)

list the 5 motor

A
  1. Ciliary ganglion (oculomotor nerve)
  2. Pterygopalatine (a.k.a., sphenopalatine) ganglion (facial nerve)
  3. Mandibular ganglion (facial nerve)
  4. Otic ganglion (glossopharyngeal nerve)
  5. Terminal (a.k.a., visceral) ganglia (vagus nerve and branches)
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

List the Afferent (sensory) ganglia (4 main ones)

A

▪ Sensory (a.k.a., semilunar) ganglion of the trigeminal nerve

▪ Geniculate ganglion of the facial nerve

▪ Vestibular ganglia of the vestibular
branch of the vestibulocochlear nerve

▪ Spiral ganglia of the cochlear branch of the vestibulocochlear nerve

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

do afferent (sensory) ganglia synapse between pre and post?

what root do these travel

A

No
dorsal root

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Spiral ganglia of the cochlear branch of what nerve

A

vestibulocochlear nerve

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Vestibular ganglia of the vestibular branch of what nerve

A

vestibulocochlear nerve

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Geniculate ganglion is of what CN

A

facial nerve

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Sensory (a.k.a., semilunar) ganglion of what CN

A

trigeminal nerve

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

The trigeminal nerve (CN V) is the Major source of ______ innervation of the head

A

SENSORY (GSA)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

what are the branches of CN V

A

▪ Ophthalmic nerve (V1)
▪ Maxillary nerve (V2)
▪ Mandibular nerve (V3)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

what branch of CN V is this?

Sensory (GSA) from nasal mucosa, nose, eyes, superior palpebrae, M/L commissures (a.k.a., canthi) of eye, scalp, forehead

A

▪ Ophthalmic nerve (V1)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

what branch of CN V is this?

Sensory (GSA) from nasal mucosa, nose,
lateral commissure (canthus) of eye, upper teeth, gum, lip, nose

A

▪ Maxillary nerve (V2)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

what branch of CN V is this?

Sensory (GSA) from ear, face, cheek, tongue, lower teeth, gum, lip

Motor (GSE) to muscles of mastication

A

▪ Mandibular nerve (V3)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

what is the only branch of CN V that is both sensory and motor

A

▪ Mandibular nerve (V3)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

The trigeminal ganglion is a SENSORY ganglion, comprised of

A

sensory (unipolar) neuron cell bodies (GSA).

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

identify

A
  1. Approximate location of trigeminal ganglion
  2. Trigeminal canal
  3. Petrous temporal bone (highlighted)
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
Q

Dendrites (in periphery) –> ____________–> Soma (in ganglion)–> ____________–> CNS/Brain

A

Peripheral processes
central processes

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
26
Q

The motor component (GSE) of the
trigeminal nerve originates from the ____________ and distributes via ___________

A

motor nucleus of the trigeminal nerve
(within the brainstem/CNS)

via the mandibular branch
(V3) to the muscles of mastication

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
27
Q

what are the muscles that CN V innervate (5)

A

▪ Temporalis m.
▪ Masseter m.
▪ Digastricus m., rostral part
▪ Lateral pterygoid m.
▪ Medial pterygoid m

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
28
Q

what is this? from what view

A

Brainstem, Dorsal View

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
29
Q

what kind of neuron is this

A

Multipolar (Motor) Neuron

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
30
Q

what is the missing step in the process

A
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
31
Q

Each division of the trigeminal nerve leaves the cranium via a

A

separate opening

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
32
Q

Ophthalmic nerve (V1) exits via the

A

Exits the cranium via the orbital fissure

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
33
Q

Maxillary nerve (V2) Exits the cranium via the

A

round foramen, which opens into the alar canal

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
34
Q

Mandibular nerve (V3) Exits the cranium via

A

the oval foramen

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
35
Q

identify 1-3 and what nerve would pass through

A

orbital fissure (1)- Ophthalmic nerve (V1)

round foramen (2)–Maxillary nerve (V2)

oval foramen (3)–Mandibular nerve (V3)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
36
Q

identify 1-3 what what nerves pass

A
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
37
Q

After leaving the cranium through their designated foramina, each division of the trigeminal nerve gives off ______

A

several branches

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
38
Q

Ophthalmic nerve branches

what to remember them

A

“NFL”

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
39
Q

what area does the nasociliary branch of the opthalmic nerve innervate

A

“nose” and “eye”

▪ nasal mucosa, skin of muzzle (ethmoidal n.; overlap zone with maxillary nerve)

▪ medial canthus / commissure (infratrochlear n.), internal eye including cornea (long ciliary n.)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
40
Q

what does the frontal nerve branch of the opthalmic nerve innervate

A

rostral frontal region, upper eyelid

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
41
Q

what does the lacrimal nerve branch of the opthalmic nerve innervate

A

eye, lacrimal area
SENSORY

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
42
Q

Nasociliary nerve is important for what reflex

A

corneal reflex

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
43
Q

Nasociliary nerve branches into what 3 nerves

A

▪ Long ciliary nerve
▪ Ethmoidal nerve
▪ Infratrochlear nerve

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
44
Q

Long ciliary nerve (of Nasociliary nerve) innervates

A

Courses with optic nerve to innervate eyeball

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
45
Q

Long ciliary nerve (of Nasociliary nerve)

afferent or efferent

A

Afferent from corneal epithelium and bulbar conjunctiva

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
46
Q

Ethmoidal nerve (of Nasociliary nerve) enters the cranium via the _______ and and then
passes through the ______________

A

Enters the cranium via the ethmoidal foramen and then passes through the cribriform plate and into the nasal cavity

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
47
Q

Ethmoidal nerve(of Nasociliary nerve)

afferent or efferent

A

Afferent from nasal mucosa and skin of nose

48
Q

Infratrochlear nerve (of Nasociliary nerve)

afferent or efferent

A

Afferent from medial canthus/commissure of eye

50
Q

The nasociliary nerve transmits ___________________ from the cranial cervical ganglion to the dilator mm. of the pupil.

A

post-ganglionic sympathetic axons

51
Q

Frontal nerve (of the ophthalmic n.) is afferent or efferent

A

Afferent from rostral frontal region and upper eyelid

52
Q

Lacrimal nerve (of the ophthalmic n.) supplies

A

autonomic innervation to the lacrimal gland

53
Q

Lacrimal nerve (of the ophthalmic n.) use what kind of post-ganglionic axons

A

▪ Post-ganglionic PSNS axons from the pterygopalatine ganglion (CN VII) join the lacrimal nerve (pre-ganglionic neurons are from facial nerve, CN VII)

▪ Post-ganglionic SNS axons from cranial cervical ganglion

54
Q

Lacrimal nerve (of the ophthalmic n.) supplies what kind of innervation

A

Supplies sensory innervation to the conjunctiva of upper eyelid

55
Q

identify the 3 arrows

56
Q

what are the branches of the maxillary nerve of CN V

how to remember it

A

ZIP

  1. Zygomatic nerve
  2. Infraorbital nerve
  3. Pterygopalatine nerve
57
Q

Zygomatic nerve of the maxillary nerve divides into

A

branches within the orbit (zygomaticotemporal and zygomaticofacial)

58
Q

what does the Zygomatic nerve of the maxillary nerve supply

A

Supplies sensory innervation to skin over zygomatic arch, caudal frontal region, inferior eyelid

59
Q

identify the nerve

A

Zygomatic n.

60
Q

what does the maxillary nerve exit out of

A

rostral alar foramen

61
Q

Infraorbital n. (branch of the maxillary nerve) is sensory to

what does the nerve travel through

A

▪ Maxillary foramen → infraorbital canal → infraorbital foramen

▪ Sensory (GSA) from upper teeth, gums, lip, and nose

62
Q

Pterygopalatine n. arises from the ventral aspect of the maxillary nerve near the __________

A

pterygopalatine ganglion (can visibly see)

63
Q

Pterygopalatine n. divides into three nerves:

A

▪ Major and minor palatine nn.
▪ Caudal nasal n (innervates nasal mucosa)

64
Q

Pterygopalatine n. is sensory from

A

from caudal nasal region and palate.

65
Q

The pterygopalatine ganglion is an autonomic
ganglion affiliated with the ___________ supplies ___________ to glands of the head (lacrimal, nasal, palatine).

A

the facial nerve; supplies parasympathetic innervation

66
Q

sensory zones of the maxillary nerve

A

zygomatic
infraorbital
Pterygopalatine

67
Q

skin over zygomatic arch, caudal frontal
region, lower eyelid, lateral canthus /
commissure of eye

what part of the maxillary nerve innervates here

68
Q

upper lip, nose, upper teeth and gums

what part of the maxillary nerve innervates here

A

Infraorbital

69
Q

palate and caudal nasal region

what part of the maxillary nerve innervates here

A

Pterygopalatine

70
Q

Mandibular nerve (V3) branches (6)

A

▪Buccal nerve –sensory
▪ Lingual nerve–sensory
▪ Inferior alveolar nerve–sensory
▪ Masticatory branches–motor
▪ Mylohyoid nerve–mixed
▪ Auriculotemporal nerve–sensory

71
Q

Buccal nerve (cheek)

location and sensory to

A

▪ Crosses the medial pterygoid m. and enters the cheek, lateral to the zygomatic salivary gland

▪ Sensory to mucosa and skin of cheek

72
Q

identify the nerve

A

▪ Buccal nerve (cheek)

73
Q

Although the buccal nerve is intimately
affiliated with the zygomatic salivary gland, the gland is supplied _____ innervation by what nerve?

A

PSNS; glossopharyngeal nerve (CN IX)

74
Q

Buccal nerve (cheek) gives sensory to mucosa and skin of cheek

why is this important

A

need for moving food out of cheek

75
Q

Lingual nerve:

sensory or motor?
where?

A

▪ Sensory (GSA) from tongue

▪ The chorda tympani n. (of CN VII, facial) joins
the lingual n. to supply taste sensation (SVA)
from the rostal 2/3 of the tongue

76
Q

Linguinal nerve is _____________ of the 3 branches

A

Largest and most rostral

77
Q

Inferior alveolar nerve

sensory or motor ?
where?

A

Mandibular foramen → mandibular canal → mental foramina

▪ Sensory (GSA) from lower teeth, gums, and lip

78
Q

identify 1 and 2

79
Q

Mylohyoid nerve

motor or sensory?
where?

A

▪ Motor (GSE) to rostral belly of digastricus m.
and mylohyoid m. (AD and MH in top right
image, respectively)

▪ Sensory to skin between the mandibles

80
Q

identify

81
Q

Masticatory branches

motor or sensory?
where?

A

Motor (GSE) to muscles of mastication

82
Q

what nerve immediately adjacent to auriculopalpebral branch of the facial nerve

A

Auriculotemporal nerve

83
Q

Auriculotemporal nerve:
sensory or motor?
where?

A

Sensory (GSA) from skin of temporal,
zygomatic, and masseteric regions, as well
as skin of external ear

84
Q

Auriculotemporal nerve–Immediately adjacent to auriculopalpebral branch of the facial nerve

there is a lot of ____ between these 2 nerves

A

LOTS of “crosstalk” between these two nerves!

85
Q

sensory zones of the mandibular nerve

A

▪ Buccal nerve (cheek)
▪ Lingual nerve
▪ Inferior alveolar nerve
▪ Mylohyoid nerve– Intermandibular region
▪ Auriculotemporal nerve

86
Q

Tongue; Ouch!!! (CN V), taste is via CN VII (chorda tympani)

name the nerve

A

▪ Lingual nerve

87
Q

name the nerve

▪ Mental nerves
▪ Teeth, lip

A

▪ Inferior alveolar nerve

88
Q

▪ External ear, temporal, zygomatic, masseteric
regions

name the nerve

A

▪ Auriculotemporal nerve

89
Q

what is this showing

A

sensory zones of mandibular nerve

90
Q

Is a mixed nerve, but is mostly motor (GSE)
to the muscles of facial expression

A

facial nerve (CN VII)

91
Q

facial nerve (CN VII) is important for maintenance of ___________

A

facial tone

92
Q

facial nerve (CN VII) travels through what foramen

A

Internal acoustic meatus → facial canal → stylomastoid foramen

93
Q

identify the meatus

A

Internal acoustic meatus

94
Q

Dorsal and ventral buccal branches of the facial nerve are motor to

A

muscles of facial expression

95
Q

Auriculopalpebral n. (branch of facial nerve) is motor to

A

Motor to muscles of facial expression,
including rostral auricular mm.

96
Q

facial nerve (CN VII) is Autonomic (PSNS) to

A

glands of the head

97
Q

facial nerve branches:
Major petrosal n. → pterygopalatine
ganglion →?

A

lacrimal n. (ophthalmic, V1)

98
Q

facial nerve branches:
Chorda tympani n. → lingual n. (CN V3) →?

A

mandibular and sublingual ganglia

99
Q

facial nerve branches: Chorda tympani n.

A

sensory
▪ Taste from rostral 2/3 of tongue
▪ Merges with lingual n. (CN V)

100
Q

what are these representing

A

Cutaneous areas of the rostral concave surface of the external ear (facial nerve)

101
Q

taste is processed by CN ___________

A

VII, IX, X

102
Q

what nerve is this

Sensory from taste buds in the rostral two thirds of the tongue

A

Facial nerve (CN VII)

103
Q

what nerve is this

Sensory from taste buds in the caudal one third of the tongue

A

Glossopharyngeal nerve (CN IX)

104
Q

what nerve is this

Sensory from taste buds in the throat
(pharynx) and epiglottis; taste buds in the
GI tract

A

Vagus nerve (CN X)

105
Q

what would lesions of CN V look like:

 Ophthalmic

A

▪ Decreased/absent corneal reflex (afferent = CN V; efferent = CN VI)

▪ Decreased/absent palpebral reflex (afferent = CN V; efferent = CN VII) when touching the upper eyelid and the medial canthas of eye

106
Q

what would lesions of CN V look like:
Maxillary

A

▪ Decreased/absent reflex/response when pinching upper lip (afferent = CN V; efferent = CN VII)

▪ Decreased/absent palpebral reflex when touching the lower eyelid and the lateral canthas of eye (afferent = CN V; efferent = CN VII)

107
Q

what would lesions of CN V look like:
Mandibular

A

▪ Decreased/absent reflex/response when touching and/or pinching lower lip (afferent = CN V; efferent = CN VII)

▪ Decreased/absent ability to close the mouth, poor jaw tone– Eventual muscle atrophy

108
Q

What about opening the mouth? Which muscle does this and which nerve(s) is it innervated by?

A

digastricus m.

109
Q

growling and snare is what kind of response

A

conscious awareness

110
Q

what CN is this

111
Q

what CN is involved

112
Q

what CN is involved

113
Q

what would lesions of CN VII look like

A

▪ Decreased/absent facial muscle tone

▪ Deviated philtrum (most obvious in horses)

▪ Decreased/absent palpebral reflex

▪ Decreased/absent facial muscle reflex (wrinkling of lips/cheeks) when
upper/lower lips are pinched.

114
Q

lesions of CN VII may result in:

Holding of food in the buccal vestibule with resultant foul smell from the mouth—Why?

A

can’t feel that the food is there

115
Q

lesions of CN VII may result in:
▪ Decreased appetite—Why?

A

no taste sensation

116
Q

unilateral facial nerve paralysis:

which side is the paralysis

CVM710: Anatomy (54 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2025 Bold Learning Solutions. Terms and Conditions