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BMB Test 3 > B7-057 CNS Vasculature > Flashcards

B7-057 CNS Vasculature Flashcards

1
Q

posterior circulation arises from

A

vertebral arteries

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2
Q

anterior circulation arises from

A

internal carotid

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3
Q

posterior circulation perfuses [6]

A

medulla
pons
midbrain
thalamus
occipital lobe
ventromedial temporal lobe

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4
Q

anterior circulation perfuses [3]

A

remaining cortex
basal ganglia
hypothalamus

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5
Q

an infarct in the basilar artery can result in […] syndrome

A

locked in syndrome

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6
Q

an infarct in the anterior inferior cerebellar artery can result in […] syndrome

A

lateral pontine syndrome

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7
Q

an infarct in the posterior inferior cerebellar artery can result in […] syndrome

A

lateral medullary syndrome

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8
Q

an infarct in the anterior spinal artery can result in […] syndrome

A

medial medullary

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9
Q

supplies the medial medulla

A

anterior spinal artery

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10
Q

supplies the lateral medulla

A

PICA

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11
Q

supplies the medial pons

A

paramedian branches of basilar

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12
Q

supplies the lateral pons

A

lateral circumferential arteries from basilar

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13
Q

most of the midbrain is perfused by

A

posterior cerebral artery

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14
Q

hallmark of brainstem lesion

A

alternating hemiplegia

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15
Q

terminal branches of the basilar

A

posterior cerebral artery

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16
Q

ipsilateral oculomotor opthalmoplegia
contralateral hemiplegia

[what vessel is affected]

A

PCA at midbrain

(upper alternating hemiplegia)

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17
Q

contralateral homonymous hemianopia with macular sparing

[what vessel is affected]

A

PCA at medial temporal/occipital lobe

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18
Q

acute disturbance in memory if lesion is bilateral

[what vessel is affected]

A

PCA at medial temporal lobe and hippocampus

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19
Q

supplies the subcortical regions, including the basal ganglia, thalamus, and internal capsule

A

lenticulostriate arteries (off MCA)

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20
Q

what structures does the anterior (superior) middle cerebral artery supply? [3]

A

frontal eye fields
Broca’s (dominant hemisphere)
motor cortex

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21
Q

what structures does the posterior (inferior) middle cerebral artery supply? [2]

A

sensory cortex
Wernickes

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22
Q

supplies the lateral surface of the frontal and parietal lobes above the lateral sulcus

A

superior MCA

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23
Q

contralateral hemiparesis of face, hand, arm with sparing of the leg and foot

[what vessel is affected]

A

superior MCA

(face=arm>leg)

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24
Q

ipsilateral deviation of the head/eyes

[what vessel is affected]

A

superior MCA

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25
Q

Broca’s aphasia with damage to dominant hemisphere

[what vessel is affected]

A

superior MCA

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26
Q

supplies the lateral surface of the temporal lobe below the lateral sulcus

A

inferior MCA

27
Q

Wernicke’s aphasia with damage to dominant hemisphere

[what vessel is affected]

A

inferior MCA

28
Q

damage to non-dominant hemisphere results in visual neglect and agitated/confused state

[what vessel is affected]

A

inferior MCA

29
Q

could cause either superior quadrantnopia or homonymous hemianopsia due to damage of the optic radiations

[what vessel is affected]

A

inferior MCA

30
Q

damage to the […] limb of the internal capsule can cause significant loss of both sensory and motor function

A

posterior

31
Q

contains the frontopontine fibers and the anterior thalamic nuclei

A

anterior limb of internal capsule

32
Q

contains corticobulbar fibers

A

genu of internal capsule

33
Q

contains corticospinal motor fibers, corticopontine fibers, and somatic sensory fibers

A

posterior limb of the internal capsule

34
Q

contralateral hemiparesis and sensory deficit of entire side due to damage to posterior limb of internal capsule

[what vessel is affected]

A

MCA lenticulostriate

(face=arm=leg)

35
Q

contralateral ataxia due to damage of frontopontine fibers in anterior limb of internal capsule

[what vessel is affected]

A

MCA lenticulostriate

36
Q

contralateral lower face hemiparesis due to damage of corticobulbar fibers in genu

[what vessel is affected]

A

MCA lenticulostriate

37
Q

does damage to the MCA lenticulostriates present with cognitive dysfunction?

A

no

38
Q

bilateral occlusion results in paraplegia affecting lower extremities and sparing the face and hands

[what vessel is affected]

A

ACA

39
Q

bilateral occlusion results in frontal lobe syndrome

[what vessel is affected]

A

ACA

(loss of will power, inability to make decisions, personality change)

40
Q

bilateral occlusion results in urinary incontinence

[what vessel is affected]

A

ACA

41
Q

unilateral occlusion of the ACA occurs distal to the

A

anterior communicating artery

42
Q

unilateral occlusion results in contralateral sensorimotor deficits, mainly involving the lower extremity and sparing the face and hands

[what vessel is affected]

A

ACA

43
Q

occlusion of ACA proximal to the […] is well tolerated because of the cross flow

A

anterior communicating artery

44
Q

pain and temperature information for the body is carried in the […] brainstem

A

lateral

45
Q

loss of all facial sensation and weak jaw muscles suggests what nucleus is affected?

A

trigeminal sensory and motor

(lateral pons)

46
Q

blood supply to lateral pons

A

long circumferential branches of the basilar

47
Q

damage to the corticospinal axons of the posterior limb of the internal capsule would result in

A

contralateral hemiplegia

48
Q

corticobulbar fibers are located in the […] of the internal capsule

A

genu

49
Q

cortocipontine fibers run in the […] of the internal capsule

A

anterior limb

50
Q

somatosensory loss from damage to the posterior limb of the internal capsule would be

A

for all modalities, not a dissociative loss

51
Q

contralateral paralysis and sensory loss of the lower limb
urinary incontinence

[what vessel is affected?]

A

ACA

52
Q

supplies the motor and sensory cortices of the lower limb

A

ACA

53
Q

supplies the motor and sensory cortices of the upper limb, temporal lobe, and frontal lobe

A

MCA

54
Q

wernickes aphasia due to MCA infarct is associated with […] due to temporal lobe involvement

A

right superior quadrantanopia

55
Q

supplies the striatum, internal capsule

A

lenticulostriate

56
Q

an infarct would cause contralateral paralysis without cortical signs

A

lenticulostriate arteries

57
Q

contralateral hemianopia with macular sparing

A

PCA

58
Q

if the […] is spared in basilar artery infarct, consciousness is preserved

A

RAS

(locked in syndrome)

59
Q

loss of horizontal, but not vertical eye movements

A

basilar artery

60
Q

facial nerve nuclei effects are specific to […] lesions

A

AICA

61
Q

ipsilateral sensorineural deafness can be caused by infarct of

A

AICA

(via laryrinthine artery)

62
Q

infarcts of what vessels can cause Horner’s syndrome

A

AICA (lateral pontine syndrome)
PICA (lateral medullary syndrome)

63
Q

nucleus ambiguus effects are specific to […] lesions

A

PICA

(lateral medullary syndrome, hoarsness, dysphagia)

64
Q

ipsilateral hypoglossal dysfunction

A

anterior spinal artery

BMB Test 3 (18 decks)

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