Cranial nerves

Question 1

Function of cranial nerve one

Answer 1

Smell

Question 2

What is the name of cranial nerve one?

Answer 2

Olfactory

Question 3

Where does CN1 pass through to leave brain ?

Answer 3

Cribriform plate

Question 4

What is CN2 called?

Answer 4

Optic nerve

Question 5

What does CN2 do?

Answer 5

Sensory innervation to retina

Question 6

Where does CN2 run

Answer 6

Optic canal

Question 7

What is CN3 called?

Answer 7

Oculomotor

Question 8

What does CN3 do

Answer 8

MR IR SR IO innervation

Question 9

CN3 palsy

Answer 9

Down and out eye

Question 10

Where does CN3 run

Answer 10

Superior orbital fissure

Question 11

Name of CN4

Answer 11

Trochlear

Question 12

What does CN4 do ?

Answer 12

SO innervation

Question 13

Where does CN4 run?

Answer 13

Superior orbital fissure

Question 14

Cn4 palsy

Answer 14

Diplopia

Question 15

CN5a name

Answer 15

Opthalmic

Question 16

CN5a function

Answer 16

Sensory to scalp forehead and nose

Question 17

Where does CN5a run?

Answer 17

SOF

Question 18

CN5b name

Answer 18

Maxillary

Question 19

Cn5b function

Answer 19

Lower eyelid, upper teeth/lip, cheeks, nasal mucosa, palate

Question 20

Where does CN5b run

Answer 20

Jugular foramen

Question 21

CN5c name

Answer 21

Mandibular

Question 22

Where does Cn5c run

Answer 22

Foramen oval

Question 23

CN5c function

Answer 23

Lower teeth, mandible and ant 2/3 tongue sensory

Mastication motor

Question 24

Name of Cn6

Answer 24

Abducens

Question 25

Where does CN6 run?

Answer 25

SOF

Question 26

Function of CN6

Answer 26

LR

Question 27

Cn6 palsy

Answer 27

Horizontal diplopia

Question 28

CN8 name

Answer 28

Vestibulocochlear

Question 29

Cn8 function

Answer 29

Cochlear and auditory apparatus - hearing

Question 30

CN8 palsy

Answer 30

Loss of hearing and proprioception, vertigo

Question 31

Where does CN8 run?

Answer 31

Internal acoustic meatus

Question 32

CN9 name

Answer 32

Glossopharyngeus

Question 33

Where does CN9 emerge

Answer 33

Jugular foramen

Question 34

What does glossopharyngeus innervate?

Answer 34

Sensory: posterior 1/3 tongue, pharynx, middle ear Motor: stylopharyneus Autonomic: salivary glands

Question 35

CN9 palsy

Answer 35

loss of gag reflex

Question 36

CN10 name

Answer 36

Vagus

Question 37

CN10 palsy

Answer 37

Loss of gag reflex Uvula deviates to opposite side Hoarse voice

Question 38

Cn10 innervation

Answer 38

A: afferents from carotid baroreceptors M: palate, pharynx, larynx S: tympanic membrane, external auditory canal and ear

Question 39

CN11 name

Answer 39

Spinal accessory

Question 40

Innervation CN11

Answer 40

trapezius and SCM

Question 41

Where does CN11 emerge

Answer 41

Jugular foramen

Question 42

How to test CN11

Answer 42

Shrug shoulders

Question 43

CN12 name

Answer 43

Hypoglossal

Question 44

Cn12 emerges from the

Answer 44

Hypoglossal canal

Question 45

CN12 function

Answer 45

Intrinsic and extrinsic tongue muscles

Question 46

Test CN12

Answer 46

Stick out tongue - note deviation

Question 47

CN7 name

Answer 47

Facial

Question 48

What does CN7 innervate

Answer 48

``` S = anterior 2/3 tongue M = facial muscle of expression A = lacrimation ```

Question 49

Where does CN7 emerge

Answer 49

Internal acoustic meatus

Question 50

Branches of CN7

Answer 50

Temporal Zygomatic Buccal Mandibular

Question 51

Afferent nerve of the corneal reflex

Answer 51

5a

Question 52

Efferent nerve of the corneal reflex?

Answer 52

7

Question 53

Afferent nerve of jaw reflex

Answer 53

5c

Question 54

Efferent nerve of jaw reflex

Answer 54

5c

Question 55

Afferent nerve of gag reflex

Answer 55

9

Question 56

Efferent nerve of gag reflex

Answer 56

10

Question 57

Afferent nerve of carotid sinus reflex

Answer 57

9

Question 58

Efferent nerve of carotid sinus reflex

Answer 58

10

Question 59

Afferent nerve of pupillary light reflex

Answer 59

2

Question 60

Efferent nerve of pupillary light reflex

Answer 60

3

Question 61

Afferent nerve of lacrimation reflex

Answer 61

5a

Question 62

Efferent nerve of lacrimation reflex

Answer 62

7