Deck 16: Cranial Nerves

Question 1

What three fiber types are found in spinal nerves?

Answer 1

Efferent (motor) fibers to skeletal muscle, afferent (sensory fibers), autonomic (motor) fibers

Question 2

How do preganglionic sympathetic fibers gain access to ganglia of the sympathetic trunk?

Answer 2

White communicating rami

Question 3

Through what branch of a spinal nerve do postganglionic sympathetic nerve fibers leave the ganglia of the sympathetic trunk?

Answer 3

Gray communicating ramus

Question 4

What are the three divisions of the trigeminal nerve (CN V)?

Question 5

Which divisions of the trigeminal nerve (CN V) only contain sensory nerve fibers that supply structures of the head?

Question 6

What are the five main branches of CN VII that innervate the muscles of facial expression?

Question 7

What are the motor functions of the glossopharyngeal nerve?

Question 8

Which nerve delivers postganglionic sympathetic fibers to the pterygopalatine fossa?

Question 9

What ganglion gives rise to the cochlear portion of the VIII nerve?

Question 10

Postganglionic sympathetic nerve fibers leave the sympathetic trunk via gray communicating rami.

Question 11

All cranial nerves have both motor and sensory roots.

Question 12

None of the cranial nerves contain preganglionic sympathetic fibers.

Question 13

Some cranial nerves have gray and white communicating rami.

Question 14

General sensation is associated with both cranial and spinal nerves.

Question 15

The facial nerve (CN VII) provides afferent fibers for taste to the posterior one-third of the tongue.

Question 16

The ophthalmic nerve contains only afferent fibers.

Question 17

The greater petrosal nerve is a branch of the glossopharyngeal nerve (CN IX).

Question 18

The trigeminal nerve (CN V) contains motor fibers.

Question 19

The chorda tympani nerve contains preganglionic parasympathetic fibers.

Question 20

Sensory information from the olfactory nerve filaments reaches the olfactory area of the cerebrum through the ____________________.

Question 21

The mucous glands forming most of the central region of the soft palate are supplied by postganglionic parasympathetic fibers whose cell bodies are found in the ____________________.

Question 22

The trunk of the facial nerve can be found in the ____________________ gland before it divides into the five primary branches that supply the muscles of facial expression.

Question 23

Taste fibers that terminate on the anterior two-thirds of the tongue are found in the ____________________ nerve.

Question 24

Photoreceptors are responsible for transferring sensory information to the ganglia on the surface of the ____________________.

Question 25

Axons from ganglion cells on the surface of the retina form the ____________________.

Question 26

The ____________________ division of the trigeminal nerve contains both sensory and motor fibers.

Question 27

The facial nerve exits the skull at the ____________________ to reach the muscles of the face.

Question 28

The ____________________ branch of the facial nerve is responsible for taste to the anterior two-thirds of the tongue.

Question 29

Postganglionic sympathetic nerve fibers in the head reach their target tissue by traveling on the ____________________ plexus.

Question 30

The major salivary gland that is supplied by parasympathetic fibers originating in the glossopharyngeal nerve is the ____________________.

Question 31

The location of postganglionic neurons that supply postganglionic sympathetic fibers to the head is the ____________________ ganglion.

Question 32

The glossopharyngeal nerve leaves the skull through the ____________________ foramen.

Question 33

Taste fibers to the posterior one-third of the tongue are found in the ____________________ nerve.

Question 34

The sensory ganglion associated with CN V is called the ____________________ ganglion.

Question 35

Nerve filaments of the olfactory nerve (CN I) pass through which of the following openings?

A) Foramen rotundum
B) Superior orbital fissure
C) Cribriform plate of the ethmoid bone
D) Foramen ovale
E) Foramen lacerum

Question 36

What is the location of the cell bodies for preganglionic parasympathetic nerve fibers of the oculomotor nerve (CN III)?

A) Ciliary ganglion
B) Nucleus of Edinger-Westphal
C) Geniculate ganglion
D) Nucleus ambiguus
E) Superior salivatory nucleus

Question 37

Which of the following cranial nerves arise from the dorsal surface of the midbrain?

A) Trochlear nerve
B) Trigeminal nerve
C) Abducens nerve
D) Facial nerve
E) Vagus nerve

Question 38

All of the following cranial nerves contain parasympathetic fibers as they leave the brain except the

A) trigeminal.
B) facial.
C) oculomotor.
D) glossopharyngeal.
E) vagus.

Question 39

The trochlear nerve (CN IV) exits the skull through which of the following foramen?

A) Foramen ovale
B) Inferior orbital fissure
C) Foramen rotundum
D) Superior orbital fissure
E) Optic canal

Question 40

The trochlear nerve (CN IV) innervates which of the following extrinsic muscles of the eye?

A) Medial rectus
B) Lateral rectus
C) Superior oblique
D) Inferior oblique
E) Superior rectus

Question 41

Which of the following cranial nerves supplies motor innervation to the lateral rectus muscles?

A) Trochlear nerve
B) Trigeminal nerve
C) Abducens nerve
D) Facial nerve
E) Vagus nerve

Question 42

A patient in your dental office presents with diplopia (double vision). Which of the following cranial nerves is most likely injured?

A) Oculomotor nerve
B) Optic nerve
C) Trochlear nerve
D) Trigeminal nerve
E) Abducens nerve

Question 43

Which of the following nerves carries pain and temperature sensations to the tongue?

A) Lingual nerve
B) Chorda tympani nerve
C) Glossopharyngeal nerve
D) Facial nerve
E) Vagus nerve

Question 44

What type of nerve fibers can be found in the greater petrosal nerve?

A) Afferent
B) Preganglionic parasympathetic
C) Preganglionic sympathetic
D) Postganglionic sympathetic
E) Postganglionic parasympathetic

Question 45

What type of nerve fibers can be found in the deep petrosal nerve?

A) Afferent
B) Preganglionic parasympathetic
C) Preganglionic sympathetic
D) Postganglionic sympathetic
E) Postganglionic parasympathetic

Question 46

The glossopharyngeal nerve (CN IX) supplies afferent innervation to all of the following structures except the

A) tongue.
B) pharyngeal wall.
C) tonsils.
D) taste buds.
E) parotid gland.

Question 47

Which of the following muscles is not innervated by the hypoglossal nerve?

A) Styloglossus
B) Palatoglossus
C) Intrinsic muscles of the tongue
D) Hyoglossus
E) Genioglossus

Question 48

Which of the following cranial nerves has nerve fibers that innervate both skeletal and smooth muscle?

A) Oculomotor
B) Vestibulocochlear
C) Spinal accessory
D) Trigeminal
E) Hypoglossal

Question 49

While talking to one of your patients, you notice that he cannot move his right eye laterally, but his left eye moves in the medial direction. What nerve is affected?

A) Oculomotor nerve
B) Facial nerve
C) Abducens nerve
D) Trochlear nerve
E) Optic nerve

Question 50

Which of the following functions is not affected in response to damage of the vestibular apparatus?

A) Blink reflex
B) Balance
C) Stabilization of the eyes while turning the head
D) Sense of motion and spatial arrangement
E) Posture

Question 51

Which of the following is a sensory ganglion?

A) Otic
B) Submandibular
C) Pterygopalatine
D) Geniculate
E) Ciliary

Question 52

A patient complains of a loss of taste and is not capable of smiling on the left side of the face. Which of the following cranial nerves is most likely affected?

A) Hypoglossal
B) Glossopharyngeal
C) Trigeminal
D) Vagus
E) Facial

Question 53

Preganglionic parasympathetic fibers that synapse in the otic ganglion leave the brainstem in which of the following cranial nerves?

A) Facial
B) Trigeminal
C) Glossopharyngeal
D) Oculomotor
E) Vagus

Question 54

Preganglionic nerve fibers in the nerve of the pterygoid canal arise from neurons found in which of the following locations?

A) Superior salivatory nucleus
B) Geniculate ganglion
C) Nucleus ambiguus
D) Intermediolateral cell column
E) Edinger-Westphal nucleus

Question 55

Postganglionic nerve fibers in the nerve of the pterygoid canal arise from neurons found in which of the following locations?

A) Pterygopalatine ganglion
B) Trigeminal ganglion
C) Otic ganglion
D) Superior cervical ganglion
E) Geniculate ganglion

Question 56

Which of the following cranial nerves does not have a sensory ganglion?

A) Abducens
B) Facial
C) Vestibulocochlear
D) Glossopharyngeal
E) Vagus

Question 57

Most of the nerve fibers that emerge from the stylomastoid foramen arise from cell bodies located in which of the following?

A) Superior cervical ganglion
B) Dorsal motor nucleus of the vagus nerve
C) Nucleus ambiguus
D) Facial motor nucleus
E) Inferior salivatory nucleus

Question 58

The volume of secretion from the parotid gland is increased by stimulation of nerve fibers arising from neurons located in the

A) otic ganglion.
B) trigeminal ganglion.
C) superior salivatory nucleus.
D) geniculate ganglion.
E) superior cervical ganglion.

Question 59

Which of the following nerve fiber types can be found in the facial nerve (CN VII)? (Select all that apply.)

A) Preganglionic sympathetic
B) Preganglionic parasympathetic
C) Afferent
D) Efferent to skeletal muscle
E) Postganglionic parasympathetic

Question 60

Which of the following fiber types are found in spinal nerves? (Select all that apply.)

A) Afferent
B) Efferent to skeletal muscle
C) Preganglionic parasympathetic
D) Postganglionic sympathetic
E) Postganglionic parasympathetic

Question 61

Which of the following afferent modalities are considered general sensation? (Select all that apply.)

A) Taste
B) Pain
C) Vision
D) Touch
E) Temperature

Question 62

Which of the following afferent modalities are considered special sensation? (Select all that apply.)

A) Smell
B) Hearing
C) Pressure
D) Temperature
E) Equilibrium

Question 63

Which of the following nerve fiber types are found in the oculomotor nerve (CN III)? (Select all that apply.)

A) Preganglionic sympathetic
B) Preganglionic parasympathetic
C) Afferent
D) Efferent to skeletal muscle
E) Postganglionic parasympathetic

Question 64

Which of the following muscles are involved in depression of the eyeball? (Select all that apply.)

A) Superior rectus
B) Superior oblique
C) Medial rectus
D) Inferior rectus
E) Inferior oblique

Question 65

Muscles capable of elevating the eyeball include (select all that apply)

A) superior rectus.
B) superior oblique.
C) lateral rectus.
D) inferior rectus.
E) inferior oblique.

Question 66

Abduction of the eyeball is accomplished by which of the following muscles? (Select all that apply.)

A) Superior rectus
B) Superior oblique
C) Lateral rectus
D) Inferior rectus
E) Inferior oblique

Question 67

Which of the following muscles are involved in adduction of the eyeball? (Select all that apply.)

A) Superior rectus
B) Superior oblique
C) Medial rectus
D) Inferior rectus
E) Inferior oblique

Question 68

Which of the following muscles are innervated by the oculomotor nerve (CN III)? (Select all that apply.)

A) Superior rectus
B) Superior oblique
C) Medial rectus
D) Inferior rectus
E) Inferior oblique

Question 69

Fibers from the trigeminal nerve exit the skull through which of the following openings? (Select all that apply.)

A) Optic canal
B) Superior orbital fissure
C) Foramen lacerum
D) Foramen ovale
E) Foramen rotundum

Question 70

Which of the following muscles receive efferent (motor) innervation from the facial nerve (CN VII)? (Select all that apply.)

A) Stylohyoid
B) Anterior belly of the digastric
C) Zygomaticus major
D) Masseter
E) Posterior belly of the digastric

Question 71

Match each cranial nerve with the correct foramen by which it exits the cranial cavity. Answers may be used once, more than once, or not at all.

-Mandibular division of V

A) Foramen lacerum
B) Cribriform plate of the ethmoid bone
C) Jugular foramen
D) Optic canal
E) Superior orbital fissure
F) Foramen rotundum
G) Inferior orbital fissure
H) Hypoglossal canal
I) Internal acoustic meatus
J) Foramen ovale

Question 72

Match each cranial nerve with the correct foramen by which it exits the cranial cavity. Answers may be used once, more than once, or not at all.

-Abducens nerve

A) Foramen lacerum
B) Cribriform plate of the ethmoid bone
C) Jugular foramen
D) Optic canal
E) Superior orbital fissure
F) Foramen rotundum
G) Inferior orbital fissure
H) Hypoglossal canal
I) Internal acoustic meatus
J) Foramen ovale

Question 73

Match each cranial nerve with the correct foramen by which it exits the cranial cavity. Answers may be used once, more than once, or not at all.

-Accessory nerve

A) Foramen lacerum
B) Cribriform plate of the ethmoid bone
C) Jugular foramen
D) Optic canal
E) Superior orbital fissure
F) Foramen rotundum
G) Inferior orbital fissure
H) Hypoglossal canal
I) Internal acoustic meatus
J) Foramen ovale

Question 74

Match each cranial nerve with the correct foramen by which it exits the cranial cavity. Answers may be used once, more than once, or not at all.

-Facial nerve

A) Foramen lacerum
B) Cribriform plate of the ethmoid bone
C) Jugular foramen
D) Optic canal
E) Superior orbital fissure
F) Foramen rotundum
G) Inferior orbital fissure
H) Hypoglossal canal
I) Internal acoustic meatus
J) Foramen ovale

Question 75

Match each cranial nerve with the correct foramen by which it exits the cranial cavity. Answers may be used once, more than once, or not at all.

-Optic nerve

A) Foramen lacerum
B) Cribriform plate of the ethmoid bone
C) Jugular foramen
D) Optic canal
E) Superior orbital fissure
F) Foramen rotundum
G) Inferior orbital fissure
H) Hypoglossal canal
I) Internal acoustic meatus
J) Foramen ovale

Question 76

Match each cranial nerve with the correct foramen by which it exits the cranial cavity. Answers may be used once, more than once, or not at all.

-Maxillary division of V

A) Foramen lacerum
B) Cribriform plate of the ethmoid bone
C) Jugular foramen
D) Optic canal
E) Superior orbital fissure
F) Foramen rotundum
G) Inferior orbital fissure
H) Hypoglossal canal
I) Internal acoustic meatus
J) Foramen ovale

Question 77

Match each cranial nerve with the correct foramen by which it exits the cranial cavity. Answers may be used once, more than once, or not at all.

-Vagus nerve

A) Foramen lacerum
B) Cribriform plate of the ethmoid bone
C) Jugular foramen
D) Optic canal
E) Superior orbital fissure
F) Foramen rotundum
G) Inferior orbital fissure
H) Hypoglossal canal
I) Internal acoustic meatus
J) Foramen ovale

Question 78

Match each cranial nerve with the correct foramen by which it exits the cranial cavity. Answers may be used once, more than once, or not at all.

-Glossopharyngeal nerve

A) Foramen lacerum
B) Cribriform plate of the ethmoid bone
C) Jugular foramen
D) Optic canal
E) Superior orbital fissure
F) Foramen rotundum
G) Inferior orbital fissure
H) Hypoglossal canal
I) Internal acoustic meatus
J) Foramen ovale

Question 79

Match each cranial nerve with the correct foramen by which it exits the cranial cavity. Answers may be used once, more than once, or not at all.

-Trochlear nerve

A) Foramen lacerum
B) Cribriform plate of the ethmoid bone
C) Jugular foramen
D) Optic canal
E) Superior orbital fissure
F) Foramen rotundum
G) Inferior orbital fissure
H) Hypoglossal canal
I) Internal acoustic meatus
J) Foramen ovale

Question 80

Match each cranial nerve with the correct foramen by which it exits the cranial cavity. Answers may be used once, more than once, or not at all.

-Hypoglossal nerve

A) Foramen lacerum
B) Cribriform plate of the ethmoid bone
C) Jugular foramen
D) Optic canal
E) Superior orbital fissure
F) Foramen rotundum
G) Inferior orbital fissure
H) Hypoglossal canal
I) Internal acoustic meatus
J) Foramen ovale