Final Neuro

Question 1

CN I passes through the:

Answer 1

cribiform plate

Question 2

CN II passes through the:

Answer 2

optic canal

Question 3

CN III passes through the:

Answer 3

orbital fissure

Question 4

CN IV passes throught the:

Answer 4

orbital fissure

Question 5

What do the three branches of CN V pass through?

Answer 5

Opthalmic: orbital fissure

Maxillary:round foramen–>alar canal–>rostral alar foramen

Mandibular: Oval foramen

Question 6

CN VI passes through the:

Answer 6

orbital fissure

Question 7

CN VII passes through the:

Answer 7

internal acoustic meatus–>facial canal–>stylomastoid foramen

Question 8

CN VIII passes through the:

Answer 8

internal acoustic meatus

Question 9

CN IX passes through the:

Answer 9

jugular foramen–>tympano occipital fissure

Question 10

CN X passes through the:

Answer 10

jugular foramen–>tympano occipital fissure

Question 11

CN XI passes through the:

Answer 11

jugular foramen–>tympano occipital fissure

Question 12

CN XII passes through the:

Answer 12

hypoglossal foramen

Question 13

CN I is _______(S/M?) for ___________

Answer 13

Sensory from smell

Question 14

CN II is __________(S/M?) for _____________

Answer 14

Sensory from sight

Question 15

CN III is ______________(S/M?) for _______________

Answer 15

motor to the dorsal, ventral, and medial rectus mm., ventral oblique m., levator palpebrae superioris m., and intrinsic eye mm.

Question 16

CN IV is ___________(S/M?) for ____________

Answer 16

Motor to dorsal oblique m.

Question 17

The ophthalmic branch of CN V is __________ (S/M) for ____________

Answer 17

Sensory from cornea, superior eyelid, medial canthus

Question 18

The maxillary branch of CN V is _________(S/M) for ______________

Answer 18

Sensory from lateral canthus, superior lip/mouth

Question 19

The mandibular branch of CN V is ___________(S/M) for _______________

Answer 19

Sensory from lower face AND motor to mm. of mastication

Question 20

CN VI is _________(S/M) for ____________

Answer 20

Motor to retractor bulbi m. and lateral rectus m.

Question 21

CN VII is ____________(S/M) for _____________

Answer 21

Sensory from ear and taste to rostral tongue AND motor to mm. of facial expression and ear

Question 22

CN VIII is ___________(S/M) for _________________

Answer 22

Sensory from hearing and equilibrium

Question 23

CN IX is ______________(SM) for _______________

Answer 23

Sensory from caudal tongue/taste AND motor to pharynx and esophagus

Question 24

CN X is _______________(SM) for _______________

Answer 24

Sensory from larynx, epiglottis (taste), viscera AND motor to pharynx (swallowing)

Question 25

CN XI is ________________(SM) for _______________

Answer 25

Motor to mm. of the neck, laryngeal mm. (cricoarytenoideus dorsalis m.--open glottis)

Question 26

CN XII is ___________(SM) for ________________

Answer 26

Motor to the tongue

Question 27

The suprascapular n. innervates which mm.?

Answer 27

Supraspinatus m. and infraspinatus m.

Question 28

The subscapular n. innvervates which mm?

Answer 28

Subscapularis m.

Question 29

The musculocutaneous n. innervates which mm.?

Answer 29

Biceps brachii m, brachialis m., coracobrachialis m. (BBC)

Question 30

The axillary n. innervates which mm.?

Answer 30

Deltoideus m., teres major m. teres minor m.

Question 31

The radial n. innervates which mm.?

Answer 31

Triceps brachii m., extensor carpi radialis m., ulnaris lateralis m., common digital extensor m., lateral digital extensor m. (triceps +ECLU)

Question 32

The median n. innervates which mm.?

Answer 32

Flexor carpi radialis m., SDF m.

Question 33

The ulnar n. innervates which mm.?

Answer 33

Flexor carpi ulnaris m., DDF m.

Question 34

The brachial plexus spans which vertebrae?

Answer 34

C6-T2

Question 35

What does the lateral thoracic n. innervate?

Answer 35

Cutaneous trunci m. (panniculus reflex!) C8-T1

Question 36

The thoracodorsal n. innervates which mm.?

Answer 36

Latissismus dorsi m.

Question 37

The lumbosacral plexus spans which vertebrae?

Answer 37

L4-S3

Question 38

The femoral n. innervates which mm.?

Answer 38

Iliopsoas m., quadriceps, sartorius m.

Question 39

The obturator n. innervates which mm.?

Answer 39

External obturator m., pectineus m., gracilis m., adductor m.

Question 40

The cranial gluteal n. innervates what mm.?

Answer 40

Middle gluteal m., deep gluteal m., tensor fasciae latae m.

Question 41

The caudal gluteal n. innervates which mm.?

Answer 41

Superficial gluteal m.

Question 42

The sciatic n. innervates which mm.?

Answer 42

Biceps femoris m., semimembranosus m., semitendinosus m.

Question 43

The common fibular n. innervates which mm.?

Answer 43

Fibularis longus m., lateral digital extensor m., long digital extensor m., cranial tibial m.

Question 44

The tibial n. innervates which mm.?

Answer 44

Gastrocnemius m., popliteus m., SDF, DDF

Question 45

"Sweeney shoulder" in the horse is a result of damage to which nerve?

Answer 45

suprascapular n. (no acromion in equine so susceptible to damage)

Question 46

Damage to which n. of the brachial plexus would prevent weight bearing on the TL?

Answer 46

radial n. ("key" nerve of thoracic limb!)

Question 47

Which brachial plexus nn. share a common trunk in the dog?

Answer 47

Median and ulnar nn.

Question 48

Which brachial plexus nn. share a common trunk in the horse?

Answer 48

Median and musculocutaneous nn.

Question 49

Damage to which n. of the lumbrosacral plexus would prevent weight bearing on the PL?

Answer 49

Femoral n. ("key" n. of the PL, innervates mm. which fix the stifle, if stifle cannot be fixed, then no weight can be born)

Question 50

A patient presents with lateral strabismus. What CN do you suspect is affected?

Answer 50

CN III Oculomotor

Question 51

Which CNs contribute to normal eye movement?

Answer 51

CN II (Optic), III (Oculomotor), IV (Trochlear), VI (Abducens)

Question 52

Which CNs are involved in producing a normal Pupillary Light Reflex?

Answer 52

CN II (Optic) IN afferent/ CN III (Oculomotor) OUT efferent

Question 53

Which CNs are involved in producing a normal Menace Response?

Answer 53

CN II (Optic) IN afferent/ CN VII (Facial) OUT efferent

Question 54

A cat presents with lateral rotation of the dorsal aspect of the pupil. What CN is likely lesioned?

Answer 54

CN IV Trochlear

Question 55

Which CN's autonomous zone includes the medial canthus?

Answer 55

Ophthalmic branch of CN V Trigeminal

Question 56

Which CN's autonomous zone includes the lateral canthus?

Answer 56

Maxillary br. of CN V Trigeminal

Question 57

T/F a lesion of the mandibular br. of CN V would result in an inability to open the mouth

Answer 57

FALSE digastricus m. has duel innervation (mandibular br. of CN V and CN VII) so this m. would still be functional with a Trigeminal lesion

Question 58

The corneal reflex involves which CNs?

Answer 58

CN V opthalmic br. IN afferent/CN VI OUT efferent

Question 59

A patient presents with medial stabismus (derp) What CN do you suspect is lesioned?

Answer 59

CN VI Abducens

Question 60

A patient presents with decreased palpebral reflex, absent menace response, and an inability to wrinkle either the upper or lower lip. Which CN do you suspect is affected?

Answer 60

CN VII Facial (involved in all 3 responses)

Question 61

Which afferent CNs would you be testing by sticking your fingers down a patient's throat to see if it had a normal gaga reflex?

Answer 61

CN IX Glossopharyngeal and CN X Vagus

Question 62

An equine patient presents with "Roarer's". What CN do you suspect is affected?

Answer 62

CN XI Accessory