Cranial Nerves

Question 1

What is Mnemonic device for remembering the order of the cranial nerves

Answer 1

Oh-olfactory
Oh-optic
Oh-oculomotor 
To-trochlear
Touch-trigeminal 
And-abducens
Feel-facial
Virgin-vestibulocochlear 
Girls-glossopharyngeal 
Vagina-vagus
Ah- accessory
Heaven - hypoglossal

Question 2

What is Mnemonic device for remembering if the cranial nerve is mostly sensory, motor, or both

Answer 2

Some=1
Say=2
Marry=3
Money=4
But =5
My=6
Brother=7
Says=8
Big=9
Boobs=10 
Matter =11
Most =12

Question 3

Drawing that helps name/identify the function of the cranial nerves.

Answer 3

the face

Question 4

What are the cranial nerves that ONLY contain sensory neurons

Answer 4

Cranial nerve 1 and 2=olfactory, and optic

Question 5

What cranial nerve is so predominantly sensory that its motor function is often overlooked

Answer 5

Cranial nerve 8 =vestibulocochlear

Question 6

What 2 cranial nerves ONLY innervate a single muscle and why is different from the other motor cranial nerves

Answer 6

Cranial nerve 4 and 6 = Trochlear and Abducens

All other motor cranial nerves innervate more than 1 muscle

Question 7

What cranial motor neurons have autonomic motor axons

Answer 7

Cranial nerves 3,7,9,10 oculomotor, facial, glossopharyngeal and vagus

all are part of the parasympathetic division

Question 8

What is the fxn and name of cranial nerve 1

Answer 8

olfactory= sense of smell

Question 9

Are the olfactory bulb and olfactory tract part of cranial nerve 1

Answer 9

No

Question 10

What is the fxn and name of cranial nerve 2

Answer 10

optic=vision

do not confuse optic nerve vs optic tract and optic chiasma

Question 11

What is the fxn and name of cranial nerve 3

Answer 11

oculomotor= intrinsic eye movement

(LR6SO4)3= lateral rectus controlled by cranial nerve 6, superior oblique controlled by cranial nerve 4, all other eye movement controlled by cranial nerve 3

Question 12

What is the fxn and name of cranial nerve 4

Answer 12

Trochlear= move the eyeball inferiorly and laterally (up and to the side)

named after trochlea a pulley like loop the tendon of the superior oblique pass through

(LR6SO4)3= lateral rectus controlled by cranial nerve 6, superior oblique controlled by cranial nerve 4, all other eye movement controlled by cranial nerve 3

Question 13

What is the fxn and name of cranial nerve 5

Answer 13

Trigeminal

• sensory= neurons to face, head, and anterior 2/3 of tongue
• somatic motor= neurons for chewing

Question 14

True or false the trigeminal nerve is the largest cranial nerve

Answer 14

True

Question 15

The smaller root of the trigeminal nerve controls what

Answer 15

mastication

Question 16

What are the 3 branches of the larger sensory root of the trigeminal nerve

Answer 16

V1= ophthalmic nerve

V2= maxillary nerve

V3= mandibular nerve

Question 17

Where is a common place for local anesthetic to be administered by dentist and physicians for the maxilla

Answer 17

V2 of the large root of the trigeminal nerve

Question 18

What is the fxn and name of cranial nerve 6

Answer 18

Abducens

moves the eye on the oblique (abduction)

(LR6SO4)3= lateral rectus controlled by cranial nerve 6, superior oblique controlled by cranial nerve 4, all other eye movement controlled by cranial nerve 3

Question 19

b

Answer 19

h

Question 20

What is the fxn and name of cranial nerve 7

Answer 20

Facial

• somatic motor= facial expressions
• parasympathetic motor= lacrimal glands, nasal gland, and saliva gland (sublingual and sub mandibular)
• sensory= taste of anterior 2/3 of tongue

Question 21

What are the 5 branches of the facial cranial nerve

Answer 21

1. Temporal =The
2. Zygomatic=Zoo
3. Buccal= Bought
4. Mandibular=More
5. Cervical= Camels

Question 22

What is the fxn and name of cranial nerve 8

Answer 22

Vestibulocochlear

Fxn= balance and hearing

Question 23

What are the 2 branches of the Vestibulocochlear

cranial nerve and there fxn

Answer 23

Vestibular branch=carries impulses for equilibrium

Cochlear branch= carries impulses for hearing

Question 24

What is the fxn and name of cranial nerve 9

Answer 24

Glossopharyngeal

taste, salivation, innervation of pharynx

• sensory= posterior 1/3 taste buds, baroreceptors of carotid sinus. chemoreceptor of carotid bodies
• parasympathetic motor=parotid gland

Question 25

What is the fxn and name of cranial nerve 10

Answer 25

Vagus

swallowing, talking, cardiac, GI tract, respiration, taste

Question 26

What is the longest cranial nerve

Answer 26

the vagus nerve

Question 27

What is the fxn and name of cranial nerve 11

Answer 27

Accessory

pharnx and larynx muscles for swallowing and neck and shoulder movement

Question 28

True or False the Accessory cranial nerve(11) only originates from the brain

Answer 28

False it originates from the brain and brain stem

Question 29

What is the fxn and name of cranial nerve 12

Answer 29

Hypoglossal

Tongue movement

innervates all intrinsic muscle of the tongue and all extrinsic muscles of the tongue except the palatoglossus

Question 30

How is the hypoglossal nerve assessed

Answer 30

Protrusion of the tongue, if it deviates one way or the other one of the genioglossus muscle is diseased

the tongue deviates toward the side of the inactive muscle

Question 31

What is the only cranial nerve that arises from the posterior aspect of the brain stem

Answer 31

cranial nerve 4, trochlear