Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Human Structure Anatomy > Cranial nerves > Flashcards

Cranial nerves Flashcards

1
Q

What are the cranial nerves in order

A

olfactory
optic
occulomotor
trochlear
trigeminal
abducens
facial
vestibulocohlear
glassopharyngeal
vagus
spinal accessory
hyoglossal

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

what nerve is the nerve of small

A

olfactory nerve

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

olfactory nerve enters through

A

nasal cavity though the cribiform plate

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

what type of fiber is the olfactory nerve

A

SVA

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

effect of CN 1 lesion will result in

A

deficit in odor sensation on the same side of legion

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

what nerve is key for vision

A

optic nerve

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Axons project…

A

through the optic chiasm to the superior colliculus and lateral geniculate

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

CN2 relays info to what

A

cortex

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

(optic nerve)
fibers on the medial side do what ?
fibers on the later side do what?

A

cross to the opposite side
stay on that side

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

function of CN2
fiber type
origin
effect of CN2 legion

A

transmit visual stimulus
SSA
ganglion cells of the retina
loss of vision in the affected eye, loss of reflex pupillary constriction

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Oculomotor supplies the

A

muscles of the orbit

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Oculomotor supplies how many muscles? and which are not

A

5
superior oblique and lateral rectus

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

function of CN3

A

constricting the pupil and accomodation of the lens for close-up vision

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

CN3 originates on the
CN3 enters the

A

the midbrain
orbit through the superior orbital fissure

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Trochlear supplies

A

one voluntary muscle of the eye and the superior oblique

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

where does CN4 originates and leave from

A

midbrain
leaves through the skull through the superior orbital fissure

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

what does Abducens CN6 supplies

A

one muscle

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

what is the muscle that CN6 supplies

A

lateral rectus of the eye

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

CN6 originates and exits

A

on the caudal pons and exits the skull through that superior orbital fissure

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

Fiber types of CN3

A

GSE and GVE

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

what is the effect of a oculomotor nerve lesion

A

the affected eye would deviate to the opposite side that the lesion is on

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

function of CN4

A

depresses the eye and looks away from the nose

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

what fiber type is CN4

A

GSE

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

effect of trochlear nerve lesion

A

effected eye is extorted and deviated upwards
double vision

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
Q

Trigeminal is CN

A

five

26
Q

sensory distribution of CN 5 is

A

primary to skin and head and the upper teeth

27
Q

the motor function of CN5 is

A

to the muscles of mastication

28
Q

the trigeminal originates

A

on the pons

29
Q

what fibers are in the CN 5

A

GSA and SVE

30
Q

effect to the CN5 results in

A

loss of sensation to the face, cornea, mouth and nose
weakness of muscles of mastication (chewing)

31
Q

facial nerve supplies

A

voluntary muscles of the face and scalp

32
Q

Facial nerve carries taste to

A

2/3s of the anterior tongue

33
Q

facial nerve originates at and exits

A

junction of pons with medulla
the skull through the stylomastoid foramen

34
Q

CN 7 innervates what

A

submandibular and sublingual, lacrimal and glands of the nose and palate

35
Q

the efferent limb of CN 7 is

A

corneal reflex

36
Q

what are the fiber types of cn7

A

GVE, SVE, SVA, GVA, GSA

37
Q

what is the effect of a facial nerve lesion

A

depends on the location

38
Q

what are the two parts of CN 8 and what is the name

A

Cochlear root and Vestibular root

Vestibulocochlear

39
Q

CN 8 originates on and exits

A

the medulla
the skull through the auditory meatus

40
Q

what are the functions of CN8 two divisions

A

role in equilibrium and balance and regulates eye movements to coordinate body position

cochear nerve transmits hearing sensation

41
Q

what is the fiber type of CN 8

A

SSA

42
Q

what is the effect of CN 8 lesion

A

loss of balance and vertigo

43
Q

What is CN9 and what does it innervate

A

Glassopharyngeal
sensory to pharynx, middle ear, , post 1/3 of tongue

motor to stylopharyngeus muscle

44
Q

where does CN 9 originate and exit

A

medulla
skill via jugular foramen

45
Q

what is the afferent limb of CN 9

A

gag reflex

46
Q

major function of CN 9 (4)

A

transmits blood pressure
co2 and o2 concentration
taste sensation
mediates salvation and swallowing

47
Q

what is the effect of a lesion on CN 9

A

reduced gag reflex, loss of carotis sinus reflex , reduced taste

48
Q

CN 10 contains what type of fibers and for what

A

sensory fibers
pain and reflex

49
Q

CN 10 originates in the and exits

A

medulla and jugular foramen

50
Q

what is the major motor nerve of cn 10 to

A

pharynx and larynx

51
Q

function of CN 10

A

moves muscles in larynx and pharynx
mediates secretion of gland, taste and sense from thorax and abdomen

52
Q

what is the effect of vagus nerve lesion

A

uvula deviation but it deviates to opposite side of tongue

53
Q

spinal accessory supplies two muscles what are they

A

trapezius and sternocleiodomastoid

54
Q

where does CN 11 originate from and where does it exit

A

spinal cord
jugular foramen posterior to vagus nerve

55
Q

function of CN 11

A

move head and shoulder and some muscles of larynx

56
Q

effects of lesion on CN 11

A

shoulder droops scapular displaced laterally and inability to shrug the shoulder on the affected side

57
Q

what does CN 12 supply and what is the nerve

A

muscles of the tongue
hypoglossal

58
Q

CN 12 originates in the and exits the

A

medulla
hypoglossal canal

59
Q

function of CN 12

A

moves tongue

60
Q

effect of CN 12

A

weakness or paralysis of the tongue
when tongue sticks out it will protrude to the affected side

Human Structure Anatomy (5 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2025 Bold Learning Solutions. Terms and Conditions