Brainscape's Knowledge GenomeTM

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


See full index

Neuro > cranial nerve fx > Flashcards

cranial nerve fx Flashcards

1
Q

anosmia

A

loss of the sense of smell (this can be unilateral or bilateral).

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

homonomous

A

overlapping visual fields

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

hemianopsia

A

one side

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

quadrantanopsia

A

loss of visual perception of one-quarter of the visual world.

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

scotoma

A

patch of vision loss.

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

strabismus

A

is a position of the eyes where they are not directed at the same target (in some parts of the country this is termed a “squint”).

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

diplopia

A

double vision

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

myopia

A

inability to see at distance (“nearsighted”) with light focusing in front of the retina… convergene of image occurs before retina

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

hyperopia

A

far sighted, behind retina convergence

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

amblyopia

A

literally means “dim eye”. This is a drifting or “lazy” eye that usually happens because one eye has bad vision. The brain often “turns off” control of that eye and the eye drifts. The patient usually does not have diplopia because input from that eye is turned off.

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

visual acuity problems and pinhole testing

A

improve-refractive

do not improve- retinal/optic nerve

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

mononuclear problems

A

anterior to optic chiasm

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

homonymous visual field problems

A

posterior to optic chiasm

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

bitemporal hemianposia

A

problems AT optic chiasm

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

most of visual cortex supplied by

A

posterior cerebral arteries

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

when a person has double vision, images will be furthest apart when

A

eyes look in the directon that the weak muscle is most active

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

horizontal diplopia results from

A

weakness of lateral or medial rectus muscles

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

verticle diplopia

A

weakness of one or the other muscles

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

the bad eye

A

sees the image furthest towards the perphery of vision

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

lateral gaze center

A

frontal eyefields

paramedian pontine reticular formaton

21
Q

vertical gaze center

A

rostral midbrain

pretectal areas

22
Q

ptosis could be due to..

A

1) weakness of levator palpebrae muscle

2) CNIII damage

23
Q

Horner’s syndrome

A 
ptosis
meiosis
anhidrosis
flushing
damage to symps
24
Q

center for pupillary light reflex

A

pretectal area

25
Q

sympathetics

A

dilate pupil

26
Q

parasymps (CN III)

A

constrict to lght

27
Q

only division of trigem with motor fibers

A

mandibular

28
Q

trigem ganglion location in head

A

lateral to sella turcica/pituitary in cavernous sinus

29
Q

CNV enters

A

pons

30
Q

lateral brainstem lesions cna block

A

ipslateral pain from face

31
Q

Bell’s Palsy

A

damages the facial nerve in the facial canal – weakens all muscles of facial expression on the side of lesion

32
Q
  1. Damage to corticobulbar fibers (from cortex to the pons)
A

produce supranuclear weakness of the lower face (sparing of forehead) on the contralateral side

33
Q

hyperacusis is what muscle

A

stapedius

34
Q

loss of taste in anterior 2/3 of tongue and hyperacusis

A

CN VII

35
Q

can not be damaged by lesions of the brain

A

Hearing

[because it is bilateral ]

36
Q

sensorineural deafness

A

Inner ear and CN VIII lesions

37
Q

caloric testing

A

is the only way to check each inner ear vestibular function independently

the patient is awake, the eyes will drift slowly toward the side of cold water with rapid correction to opposite side (the opposite for warm water)

38
Q

caloric testing and damaged vestibular apparatus

A

this is because there is a tonic balance in vestibular input from both ears

cold water decreases, warm water increases tonic input

damaged ear acts like cold water caloric

39
Q

glossopharyngeal nerve provides sensation to

A

carotid baroreceptor

chemoreceptor

pharynx and middle ear

40
Q

vagus nerve activates

A

elevator of the soft palate – will elevate with deviation of base of uvula AWAY from the side of lesion

41
Q

lesion of recurrent laryngeal (vagus)

A

painless hoarseness wth weakness or paralyss of vocal cord on that side

42
Q

spinal accessory nerve pathway

A

cervical spinal cord–> enters through foramen magnum–>exits jugular foramen

43
Q

corticobulbar damage (like a stroke) + mouth

A

slightly weaken contralateral side of tongue and soft palate

44
Q

jaw jerk reflex

A

afferent- trigem

efferent- trigem

45
Q

corneal reflex

A

afferent trigem

efferent-facial

46
Q

gag reflex

A

afferent- glossopharyngeal

efferent- vagus

47
Q

cough reflex

A

afferent vagus

efferent- resp centers and vagus

48
Q

BRR

A

afferent - glossopharyngeal

efferent- vagus

49
Q

weber’s test

A

lateralzed toward side of conductive deafness and away from sensorineural

Neuro (23 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions