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Loyola
Brain lesions and neurodegenerative disorders
35
Medical
Professional
05/14/2006

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Cards

Term
Motor aphasia with good comprehension?
Definition
Broca's Area Lesion
Term
Where is Broca's area?
Definition
Inferior Frontal gyrus
Term
Sensory aphasia with poor comprehenion?
Definition
Wernicke's Area Lesion
Term
Where is Wernicke's area?
Definition
Superior Temporal Gyrus
Term
A lesion in what area causes conduction aphasia with poor repetition, good comprehension and fluent speech?
Definition
Arcuate fasiculus
Term
What is Kluver-Bucy syndrome?
Definition
hyperorality, hypersexuality and disinhibited behavior
Term
Where is the lesion that causes Kluver-Bucy?
Definition
bilateral amygdala lesion
Term
What lesion causes personality changes and deficits in concentration, orientation and judgement with emergence of primitive relflexes?
Definition
frontal lobe lesion
Term
What does a lesion of the right parietal lobe cause?
Definition
hemi-spacial neglect syndrome
Term
What does a lesion of the reticular activating system cause?
Definition
coma
Term
What does a lesion of the mammilary bodies cause?
Definition
wernicke-korsakoff syndrome
Term
what type of lesion would a patient with a resting tremor, chorea, and athetosis have?
Definition
basal ganglia lesion
Term
What type of lesion causes an intention tremor and limb ataxia?
Definition
cerebellar hemisphere lesion
Term
What type of lesion causes truncal ataxia and dysarthria (speech problems)?
Definition
cerebellar vermis
Term
What does a lesion of the subthalamic nucleus cause?
Definition
contralateral hemiballismus
Term
What is athetosis?
Definition
slow, writing, movements esp of fingers characteristic of basal ganglia lesion
Term
What is hemiballismus and where is the lesion?
Definition
suddent wild flailing of an extremity

contralateral subthalamic nucleus

loss of inhibition of thalamus through globus pallidus
Term
What part of the brain does alzheimer's affect?
Definition
cerebral cortex
Term
What are the characteristic histological findings in AD?
Definition
senile plaques composed of B amyloid (extracellular) and neurofibrillary tangles (intracellular) made of abnl phosphorylated tau proteins.
Term
What chromosomes/genes is AD associated with in 10% of ppl with AD
Definition
chrom 1, 14, 19 (APOE4 allele) and chrom 21 (p-App gene)
Term
What are the characterisic findings in pick's dz?
Definition
dementia, aphasia, and parkinsonian sx with Pick bodies (intercellular aggregated tau protein.
Term
Where is the cerebral damage in Pick's disease?
Definition
Temporal and frontal lobes
Term
Where is the lesion in HD?
Definition
Basal ganglia--atrophy of the caudate nucleus
Term
What is the mode of inheritance for HD?
Definition
AD inheritance
Term
what are the sx of HD?
Definition
chorea and dementia
Term
What chromosome is implicated in HD and what is the repeat?
Definition
chrom 4 CAG repeat
Term
What neurons are lost in HD?
Definition
GABAergic neurons
Term
What histo characteristics are associated with PD?
Definition
lewy bodies and depigmentation of the substantia nigra
Term
What neurons are lost in PD?
Definition
Dopaminergic neurons
Term
What are the 4 main sx associated with PD?
Definition
cogwheel rigidity, resting tremor, postural instability, and akinesia
Term
What toxic exposure is assoc with PD?
Definition
MPTP, a contaminant in street drugs
Term
What Lou Gehrig's Disease?
Definition
ALS amyotrophic lateral sclerosis
Term
What is Werdnig-Hoffmann dz?
Definition
AR inheritance, presents with floppy baby and tongue fasiculations and anterior horn degeneration and death at about age 7.
Term
What part of the brain does polio affect?
Definition
motor neurons-anterior horn
Term
what type of signs (UMN vs LMN) does polio give?
Definition
LMN
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