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z Neuro-ophth - Cumulative Bitch > God Save Us > Flashcards

God Save Us Flashcards

1
Q

Iris innervation

  • sphincter
  • dilator
A

S: stroma, CN3 PNS via SPCN

D: ant epith, SNS via LPCN and SPCN

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2
Q

Motor

  • corticospinal
  • basal ganglia
  • cerebellum
A

Strength

Scale

Accuracy

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3
Q

Corticospinal

  • LMN = 0/1
  • LMN = 3/4
A

Reduced/absent = dorsal brainstem

Exaggerated = ventral

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4
Q

Visual system: retinotopic mapping

  • inferior VF
  • superior VF
  • central
  • peripheral
A

Inf: parietal lobe, upper bank calcarine sulcus

Sup: Meyer’s loop, lower bank

Central: toward occipital pole

Periph: toward anterior end of sulcus (medial surface only)

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5
Q

Thalamic nuclei damage

-unilateral infarct causes

A

Contralateral hemianopia

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6
Q

Where is the damage

  • cortical blindness
  • alexia
  • blindsight
A

CB: bilateral PVC damage -> lose entire VF

A: occipital section -> problems reading

BS: PVC

*all primary visual/striate cortex

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7
Q

Describe blindsight

A

Cortical blindness + ability to ID lines/motion

Abolished by damage to LGN

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8
Q

VF losses: damage to PVC

  • unilateral
  • bilateral
  • ischemic (e.g. PCA occlusion)
  • ischemic + splenium
A

U: homonymous hemianoipia

B: cortical blindness

I: homonymous hemianopia

I+S: alexia without agraphia

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9
Q

Where is the damage

-achromatopsia (loss of all color vision)

A

Ventral occipital cortex

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10
Q

Hemineglect

  • where is the damage
  • which side is normally affected
A

Larger area of parietal

Usually L neglect due to R damage

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11
Q

Parietal-occipital-temporal

-functions

A

Multisensory integratoin

Talks to FEF, helps guide eye movements

Process letters, numbers, math

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12
Q

Parietal-occipital-temporal

  • Balint syndrome
  • Gertsmanns syndrome
  • what other
A

B: simultagnosia, optic ataxia, ocular apraxia

G: alexia, acalculia, R/L disorientation

Dyslexia

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13
Q

Stroke

-most common artery

A

MCA

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14
Q

Blood supply

  • optic tract
  • LGN
A

Anterior choroidal

Thalamogeniculate

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15
Q

Blood supply

  • anterior system
  • posterior system
A

Internal carotid

Vertebro-basilar

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16
Q

MCA supplies (4)

A

Basal ganglia
Internal capsule
Corona radiata
Optic radiations (esp inf division)

17
Q

ACA territory big picture

A

Medial supply = spares visual system for most part

18
Q

Where is the infarct

  • voluntary lateral gaze
  • broca’s aphasia (output)
A

Superior MCA

19
Q

Where is the infarct

  • object + spatial visual systems
  • VF + EOMs intact
  • Wernicke’s aphasia (lack comprehension)
A

Inferior MCA

20
Q

Where is the infarct

  • VF loss
  • memory affected
  • may have hemianopia, MCA generally rescues central vision
A

PCA

21
Q

Where is the infarct

-hemianopia (-) macular sparing

A

LGN

22
Q

Where is the infarct

  • hemiplegic gait
  • lower ipsi face weakness
A

Internal capsule

23
Q

Where is the infarct

  • ipsi Horners, miosis
  • imbalance
  • nystagmus with slow towards ipsi side
A

Lateral medulla (Wallenberg)

24
Q

Where is the infarct

-left abducens palsy

A

Medial pons

25
Q

Where is the infarct

  • ispi CN3 palsy, ptosis, pupillary constriction
  • peduncle/cerebri = contralateral hemiparalysis, UMN signs
A

MB (Webers)

26
Q

Where is the damage

-visual agnosia (lose object recognition)

A

Temporal or occipital gyri

27
Q

Where is the damage

-prospagnosia (can’t recognize faces)

A

Fusiform gyri

28
Q

Wheres the damage

-anomia (can recognize, not name objects)

A

Wernicke’s

z Neuro-ophth - Cumulative Bitch (10 decks)

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