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organic disorders
relates to physical structures
does not affect the neurons
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example of organic disorders
- (not affect neurons)
- cleft palate, polyps, nodules
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example of neurogenic disorders
aphasia, dementia, disarthria
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neurogenic disorders
relates to the neurologic structures
can often have physical problems, but does affect neurons
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right hemisphere is responsible for:
music, reading, abstract thinking
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left hemisphere is responsible for:
language
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motor strip area
brocca's area
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language disorders are seen with damage to what area of brain?
wernikie's area
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how do the 2 hemispheres differ in completing a task (overall)
they differ in the type of processing needed to complete the task
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relationship between education and lateral processing
- less education--less lateral processing
- more education--more lateral processing
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left hemisphere functions
- verbal
- calculation
- linguistic
- analytic
- sequential/linear
- logical
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right hemisphere functions
- non-verbal
- music
- spatial
- wholistic/synthetic
- parallel
- intuitive
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the 2 kinds of CVA (cerebrovascular accident/ stroke)
ischemic, hemorrhagic
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lack of oxygen in CVAs cause:
tissue damage
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what percentage of strokes/CVAs are ischemic?
75%
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the two types of ischemic CVAs
thrombotic and embolic
describe how the blood flow is blocked
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most common type of CVA
thrombosis
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tia: transient asthemic attack
warning signs of a stroke. symptoms for up to 24 hours, longer is considered a stroke
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tia: transient asthemic attack results from:
thrombosis
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artery that supplies blood the the brain
internal carotid artery
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artery that supplies blood to the face
external carotid artery
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common site for thrombosis
the bifurcation of the common carotid artery-at the level of the thyroid cartilage, becoming internal and external carotid arteries
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circle of willis
provides blood to the cortex and subcortex at the base of the brain
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what artery feeds most of the lateral surface of the brain?
middle cerebral artery
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stroke in the middle cerebral artery affects:
language
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what determines the severity of a stroke
the size and placement of the clot
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artery that supplies most of the medial surface
anterior corroded artery
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supplies blood to the posterior and inferior surface
posterior corroded artery
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what are water shed areas?
- areas around the cortex where blood flows from 2 different arteries.
- somewhat immude to blockages
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hemorrhage causes what percentage of CVAs/strokes?
25%
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in an hemorrhage cva, what causes the damage?
the hemorrhage pushing on the brain tissue because of the blood bursting and filling the area of the brain
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hemorrhage can be associated with what 3 things that help cause?
trauma, aneurysm or hypertension.
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organic disorders can be _____ or ______
developmental or acquired
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acquired is considered what time frame?
after 3 years of age
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