Cranial Nerves II

Question 1

Trochlear nerve is CN ___

Answer 1

IV

Question 2

CN IV contains only these types of fibers

Answer 2

General Efferent (GE) fibers

Question 3

CN ___ provides ___ fibers to the ______

Answer 3

IV, GE, superior oblique muscle

Question 4

CN IV nuclei are located in the ____ at the level of______

Answer 4

midbrain, the inferior colliculi

Question 5

CN IV originates in the ______ aspect of the _____

Answer 5

dorsal, midbrain

Question 6

CN IV exits the midbrain _____

Answer 6

dorsally

Question 7

After exiting midbrain, CN IV will ______ and course (ant/post)_____

Answer 7

cross over, anteriorly

Question 8

CN IV will exit the cranial cavity via the _____

Answer 8

superior orbital fissure

Question 9

The trochlear nerve is vulnerable to

Answer 9

trauma

Question 10

CN V is

Answer 10

Trigeminal Nerve

Question 11

CN __ provides sensory information from most of the head and neck structures

Answer 11

V, Trigeminal Nerve

Question 12

Trigeminal nerve is a (motor/sensory) nerve

Answer 12

sensory

Question 13

What are the 3 divisions of the Trigeminal nerve?

Answer 13

Ophthalmic
Maxillary
Mandibular

Question 14

CN V1 is

Answer 14

Ophthalmic nerve

Question 15

CN V2 is

Answer 15

Maxillary nerve

Question 16

CN V3 is

Answer 16

Mandibular nerve

Question 17

The ophthalmic nerve (CN ____) exits the cranial cavity via

Answer 17

V1, Superior orbital fissure

Question 18

The Maxillary nerve (CN ____) exits the cranial cavity via

Answer 18

V2, Foramen rotundum

Question 19

The Mandibular nerve (CN ____) exits the cranial cavity via

Answer 19

V3, Foramen Ovale

Question 20

Name the 4 Parasympathetic Ganglia suspended by the Trigeminal Nerve

Answer 20

Ciliary ganglion
Pterygopalatine ganglion
Otic ganglion
Submandibular ganglion

Question 21

Branches of the Trigeminal nerve carry hitchhiking \_\_\_\_\_\_\_\_\_\_ that emerge from these 4 ganglion
Ciliary ganglion
Pterygopalatine ganglion
Otic ganglion
Submandibular ganglion

Answer 21

post-ganglionic parasympathetic

Question 22

_____ fibers allow for sensation for head and neck structures

Answer 22

General Afferent (GA)

Question 23

_____ fibers allow for motor innervation to muscles of mastication and tensor tympani muscle of the middle ear

Answer 23

General Efferent (GE)

Question 24

Trigeminal nerve exits out of the

Answer 24

Lateral pons

Question 25

After exiting the lateral pons, the trigeminal nerve creates the ___

Answer 25

trigeminal ganglion

Question 26

From the trigeminal ganglion, the trigeminal nerve forms the

Answer 26

3 branches (V1, V2, V3)

Question 27

The trigemnial nerve carry ___ fibers for motor innervation of some striated muscles

Answer 27

General Efferent (GE)

Question 28

CN __ is the abducens nerve

Answer 28

VI

Question 29

Abducens nerve contains what kind of fibers?

Answer 29

General Efferent

Question 30

CN VI is the

Answer 30

Abducens nerve

Question 31

Abducens nerve innervates the

Answer 31

lateral rectus muscle

Question 32

The nucleus of CN VI is located where?

Answer 32

in the dorsal pons

Question 33

CN VI exits the brainstem at what location?

Answer 33

Junction of pons and medulla (pontomedullary junction)

Question 34

CN VI exits the cranial cavity via the

Answer 34

Superior orbital fissure

Question 35

Innervation of the lateral rectus muscle is done by CN __ and it allows for (voluntary/involuntary) control of (adduction/abduction)

Answer 35

VI, voluntary, abduction

Question 36

Once exiting the pontomedullary junction, CN VI climbs up the

Answer 36

clivus of the occipital bone

Question 37

This nerve is susceptible to being damaged by intracranial pressure around the clivus

Answer 37

Abducens nerve

Question 38

CN ____ Facial Nerve

Answer 38

VII

Question 39

Facial nerve emerges from the ____

Answer 39

brainstem at the pontomedullary junction laterally

Question 40

The nuclei of CN VII is located where

Answer 40

Caudal pons

Question 41

CN VII exits the cranial cavity via the

Answer 41

internal acoustic meatus

Question 42

After leaving the internal acoustic meatus, the facial nerves travels in the _____ of the petrous part of the temporal bone

Answer 42

facial canal

Question 43

What kind of fiber(s) does the facial nerve have?

Answer 43

GA
VE

SA
GE

Question 44

____ fibers innervate muscles of facial expression and scalp, stapedius muscle of middle ear, stylohyoid muscle, posterior belly of digastric muscle

Answer 44

GE

Question 45

___ fibers innervate the lacrimal gland, submandibular gland, sublingual gland, glands of nose and palate

Answer 45

VE

Question 46

___ fibers innervate the anterior 2/3 of the tongue for taste

Answer 46

SA

Question 47

___ fibers provide general sensation from skin part of the auricle and from a small area behind the ear

Answer 47

GA

Question 48

Motor fibers of the facial nerve exit via the

Answer 48

stylomastoid foramen