Cranial Nerves

Question 1

Motor to the Dorsal Oblique Muscle

Answer 1

CN IV- Trochlear Nerve

Question 2

Sensory from the caudal 1/3 of the tongue (taste and touch) and pharyngeal mucosa

Motor to the pharynx

PSNS to parotid and mucosal gland

Answer 2

CN IX- Glossopharyngeal

Question 2

Test for CN X

Answer 2

Increase heart rate present

Decreased gut sounds present

Gag reflex

Question 2

CN XI

Answer 2

Spinal Accessory Nerve

Question 3

Test for CN III

Answer 3

Tracking (Movement of pupil in dorsal, ventral, or medial direction)

Lateral Strabismus present

Droopy upper eyelid

PLR

Question 4

Test for CN XII

Answer 4

Tongue tone

Tongue atrophy presence

Pull tongue

Watch drinking water

Question 5

The ___________ goes through the oval foramen.

Answer 5

The Mandibular branch of Trigeminal goes through the oval foramen.

Question 6

The ____________ goes through the internal acoustic meatus

Answer 6

The Vestibulocochlear Nerve goes through the internal acoustic meatus

Question 7

CN IV

Answer 7

Trochlear Nerve

Question 7

Test for CN IV

Answer 7

Presence of oblique deviation of the pupil

_______________

Not obvious in species with round pupils

Question 8

Pupillary light reflex afferent nerve is ___________ and the efferent nerve is ___________.

Answer 8

Pupillary light reflex afferent nerve is Optic Nerve and the efferent nerve is Oculomotor Nerve.

Question 8

CN V

Answer 8

Trigeminal

Question 9

The _________ passes through the cribiform foraminia.

Answer 9

The Olfactory Nerve passes through the cribiform foraminia.

Question 10

Test for CN II

Answer 10

Menace Response

Obstacle Course

Cotton Ball Test

PLR

Tracking

Question 12

CN III

Answer 12

Oculomotor Nerve

Question 14

Sensory from retina (vision)

Answer 14

CN II- Optic Nerve

Question 15

CN I

Answer 15

Olfactory Nerve

Question 16

Motor to trapezius, omotransversarious, sternocephalicus, and cleidocephalicus

Motor to larynx (via reccurent laryngeal nerve)

Answer 16

CN XI Spinal Accessory

Question 17

CN II

Answer 17

Optic Nerve

Question 18

Test for Mandibular branch of Trigeminal

Answer 18

Touch sensation to lower lip/jaw, auriculotemporal area

Ability to masticate

Question 18

CN IX

Answer 18

Glossopharyngeal Nerve

Question 18

CN X

Answer 18

Vagus Nerve

Question 19

The __________ goes through stylomastoid foramen and internal acoustic meatus.

Answer 19

The Facial Nerve goes through stylomastoid foramen and internal acoustic meatus.

Question 21

Sensory from lower jaw/teeth, cheek, rostral 2/3 of tongue and auriculotemporal area (touch)

Motor to muscles of mastication (Rostral belly of Digastricus)

Answer 21

Mandibular branch of Trigeminal

Question 22

CN VII

Answer 22

Facial Nerve

Question 23

CN VI

Answer 23

Abducens Nerve

Question 23

Test for CN VII

Answer 23

Droopy muscles of facial expression Palpebral reflex (failure to close)

Question 23

Sensory for hearing and balance

Answer 23

CN VIII- Vestibulocochlear

Question 24

Sensory from olfactory epilthelium (smell)

Answer 24

CN I - Olfactory Nerve

Question 25

Test for CNI

Answer 25

Olfaction (smell test)

Question 26

Test for CN IX

Answer 26

Gag reflex Swallowing

Question 28

Test for Maxillary branch of Trigeminal

Answer 28

Palpebral reflex: lateral canthus Touch sensation to upper lip

Question 29

Efferent stimulation is related to motor/sensory.

Answer 29

Efferent stimulation is related to **motor**/sensory.

Question 31

Nerves that pass through the Orbital fissure

Answer 31

CN III - Oculomotor CN IV - Trochlear CN V - Opthalmic br. of Trigeminal CN VI - Abducens

Question 32

Afferent stimulation is related to motor/sensory.

Answer 32

Afferent stimulation is related to motor/**sensory**.

Question 33

Motor to the pharynx and esophagus Sensory to ear canal and epiglottis PSNS to heart, lungs and abdomen

Answer 33

CN X - Vagus

Question 33

Test for CN XI

Answer 33

Atrophy of muscles innervated present

Question 35

CN VIII

Answer 35

Vestibulocochlear Nerve

Question 36

Test for CN VI

Answer 36

Tracking (lateral movement) Medial stribismus present

Question 37

CN XII

Answer 37

Hypoglossal Nerve

Question 39

Sensory from globe, periorbita, nasal mucosa, and medial aspect of palpebrae (touch)

Answer 39

Opthalmic branch of Trigeminal Nerve

Question 40

Palpebral reflex afferent is ________ and the efferent is \_\_\_\_\_\_\_\_\_\_\_.

Answer 40

Palpebral reflex afferent is **Opthalmic Branch of Trigeminal** and the efferent is **Facial Nerve**.

Question 41

Motor to muscles of facial expression and caudal belly of digastricus m Sensory from the rostral 2/3 of the tongue (taste) PSNS to salivary and lacrimal gland

Answer 41

CN VII- Facial Nerve

Question 42

Motor to extrinsic and intrinsic muscles of the tongue

Answer 42

CN XII- Hypoglossal

Question 44

Motor to retractor bulbi muscle and lateral rectus muscle

Answer 44

CN VI - Abducens

Question 46

Test for Opthalmic branch of Trigeminal

Answer 46

Palpebral reflex: medial canthus

Question 47

Test for CN VIII

Answer 47

Hearing Vestibular signs present (Nystagmus, Heat tilt, Circling)

Question 48

The ___________ goes through the round foramen and rostral alar foramen.

Answer 48

The **Maxillary Branch of Trigeminal** goes through the round foramen and rostral alar foramen.

Question 49

Nerves that go through the Jugular Foramen and Tympanooccipital Fissure

Answer 49

CN IX - Glossopharyngeal CN X- Vagus CN XI- Spinal Accessory

Question 50

Motor to DVM Rectus, Ventral Oblique and Levator palpebrae superioris mm PSNS to ciliary ganglion

Answer 50

CN III - Oculomotor Nerve

Question 51

The _________ goes through the hypoglossal canal.

Answer 51

The **hypoglossal nerve** goes through the hypoglossal canal.

Question 52

Sensory from the upper lip/teeth, nasal mucosa, lateral and ventral aspect of palpebrae (touch)

Answer 52

Maxillary branch of trigeminal

Question 53

The __________ passes through the optic canal.

Answer 53

The **Optic Nerve** passes through the optic canal.