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Year 1 Neuroanatomy > Lesions II medulla > Flashcards

Lesions II medulla Flashcards

1
Q

what are the syndromes associated with lesions to the medial pontine basis?

A
  1. dysarthria hemiparesis 2. ataxic hemiparesis
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2
Q

what are the syndromes associated with lesions to the medial pontine basis and tegmentum?

A
  1. foville’s syndrome 2. pontine wrong-way eyes syndrome 3. millard-gubler syndrome 4. regions variably involved
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3
Q

what are the syndromes associated with lesions to the lateral caudal pons?

A

AICA syndrome

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4
Q

what are the syndromes associated with lesions to the dorsolateral rostral pons?

A

superior cerebellar artery syndrome

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5
Q

what are the syndromes associated with lesions to the medial medulla?

A

medial medullary syndrome

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6
Q

what are the syndromes associated with lesions to the lateral medulla?

A

lateral medullary syndrome (Wallenburg)

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7
Q

what structures are involved in medial brainstem lesions?

A
  1. pyramidal tract (corticospinal) 2. medial lemniscus 3. CN 3 (pons), 6(caudal pons), 12 (medulla) 4. MLF
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8
Q

what structures are involved in lateral brainstem lesions?

A
  1. spinothalamic tract 2. spinal tract of V 3. CN 5, 7 (pons), 8 (pons / medulla), 9, 10 (medulla)
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9
Q

definition: alternating hemiplegia

A
  1. cranial nerve deficits on one side 2. descending long motor tract deficits on opposite side
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10
Q

what vessel would likely be occluded in dysarthria hemiparesis?

A

basilar artery - paramedian branches (ventral territory)

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11
Q

where is the lesion in dysarthria hemiparesis?

A

medial pontine basis

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12
Q

what structures are affected in dysarthria hemiparesis?

A
  1. corticonuclear tract (UMNs) 2. corticospinal tract (UMNs)
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13
Q

what vessel would likely be occluded in ataxic hemiparesis syndrome?

A

basilar artery - paramedian branches

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14
Q

what structures are affected in ataxic hemiparesis syndrome?

A
  1. corticonuclear tract (UMNs) 2. corticospinal tract (UMNs) 3. pontine nuclei and pontocerebellar fibers
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15
Q

where is the lesion in ataxic hemiparesis?

A

medial pontine basis

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16
Q

what vessel would likely be occluded in foville’s syndrome?

A

basilar artery - paramedian branches

17
Q

what structures are affected in foville’s syndrome?

A
  1. corticonuclear tract 2. corticospinal tract 3. facial colliculus (LMNs) - abducens nucleus or PPRF, facial nerve root fascicles
18
Q

where is the lesion foville’s syndrome?

A

medial pontine basis and tegementum

19
Q

what vessel would likely be occluded in wrong-way eyes syndrome?

A

basilar artery - paramedian branches

20
Q

what structures are affected in wrong-way eyes syndrome?

A
  1. corticonuclear tract 2. corticospinal tract 3. abducens nucleus or PPRF
21
Q

where is the lesion in wrong-way eyes syndrome?

A

medial pontine basis and tegmentum

22
Q

what vessel would likely be occluded in millard-gubler syndrome?

A

basilar artery - paramedian branches

23
Q

what structures are affected in millard-gubler syndrome?

A
  1. corticonuclear tract 2. corticospinal tract 3. facial nerve fascicles (LMNs)
24
Q

where is the lesion in millard-gubler syndrome?

A

medial pontine basis and tegmentum

25
Q

what vessel would likely be occluded in variable regions of the brainstem?

A

basilar artery - paramedian branches

26
Q

what structures are affected in the variable regions of the brainstem?

A
  1. medial lemniscus 2. medial longitudinal fasciculus (MLF)
27
Q

where is the lesion in the variable regions of the brainstem?

A

medial pontine basis and tegmentum

28
Q

what structures are affected in AICA syndrome?

A
  1. middle cerebellar peduncle 2. vestibular nuclei 3. trigeminal nucleus and tract 4. spinothalamic tract 5. descending sympathetic fibers
29
Q

where is the lesion in AICA syndrome?

A

lateral caudal pons

30
Q

what structures are affected in superior cerebellar artery syndrome?

A

superior cerebellar peduncle

31
Q

where is the lesion in superior cerebellar artery syndrome?

A

dorsolateral rostral pons

32
Q

what vessels(s) would likely be occluded in medial medullary syndrome?

A
  1. anterior spinal artery - paramedian branches 2. vertebral artery - paramedian branches
33
Q

what structures are affected in medial medullary syndrome?

A
  1. corticospinal tract 2. hypoglossal nerve and nucleus (LMNs) 3. medial lemniscus
34
Q

what vessels(s) would likely be occluded in lateral medullary syndrome (Wallenburg’s syndrome)?

A
  1. vertebral artery thrombosis 2. PICA thrombosis
35
Q

what structures are affected in lateral medullary syndrome?

A
  1. inferior cerebellar peduncle 2. vestibular nuclei 3. spinothalamic tract 4. spinal tract and nucleus of V 5. descending sympathetic fibers 6. nucleus ambiguus 7. loss of vertical orientation

Year 1 Neuroanatomy (27 decks)

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