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57 Cards in this Set
- Front
- Back
a group of immunemediated disorders targeting the peripheral nerves characterized by progressive weakness of the extremeties and attenuation or loss of reflexes.
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guillain-barre syndrome. an autoimmune neuropathy
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presentation of this autoimmune neuropathy includes rapidly progresive paralysis, often ascending, areflexia, evidence of demyelination on nerve conduction studies, a neurologic emergency that may rapidly progress to respiratory compromise
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Guillain-Barre syndrome.
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Campylobacter jejuni is the most frequently identified organism in this syndrome, and there is a suspected link between the two causing neurologic symptoms
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guillain barre
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within the CNS, a bundle of pathway axons is called?
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tract
fasciculus peduncle lemniscus |
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outside the CNS, in the peripheral nerves that connect the CNS to skin/muscle/organ systems are bundles of axons called?
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nerves
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if you have an occlusion of the basilar artery at the junction of the 2 posterior cerebral arteries, what will occur/
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total blindness. the post. cerebral arteries supply the visual cortex
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what do the cerebellar arteries' supply with blood?
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the cerebellum and brainstem
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what are the 3 main sensory systems entering the spinal cord?
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Pain-temperature
Proprioception-stereognosis Light Touch |
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if you have a lesion of the spinothalamic tract, what loss will this result in?
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pain-temp sensation contralaterally, below the level of the lesion
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what can be a major distinguishing factor of motor neuron disease VS. peripheral neuropathies?
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absence of sensory changes
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when upper motor neuron systems are damaged above the crossover of its tracts in the medulla, what is impaired?
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motor impairment develops on the contralateral side
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what does damage to LMN or the "final common pathway" result in?
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it causes ipsilateral weakness and paralysis, muscle tone and reflexes are decreased or absent
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what will damage to the basal ganglia result in?
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damage produces changes in muscle tone *increase* disturbances in posture and gait, bradykinesia.
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what will damage to the cerebellum result in?
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impairment of coordination, gait and equilibrium
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what are the two sensory pathways?
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spinothalamic tracts
posterior columns |
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what are the functions of the sensory pathways?
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"SCAR"
Sensation Calibrate body pos. in space Autonomic fxn: HR, RR, BP Reflexes |
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where do the cortiospinal tracts originate?
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in the motor cortex of the brain
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what is the name of the tracts that synapse in the brainstem with motor nuclei of the cranial nerves?
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corticobulbar
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name the general parts that make up the CNS?
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cerebrum, brain stem, cerebellum and spinal cord, diencephalon, and the basal ganglia
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what makes up the basal ganglia?
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caudate nucleus, globus pallidus, putamen, claustrum, amygdala.
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what are the two main pairs of arteries that supply the brain?
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internal carotids
vertebral arteries |
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if the Right carotid artery is obstructed, what will occur?
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weakness and loss of sensation on the LEFT side of the body
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if the vertebral artery is occluded (aka PCA)what circulation is affected?
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posterior cerebral circulation to the visual area of the cerebrum, the brain stem and the cerebellum. this will result in
visual loss dizziness etc. |
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an occlusion of the anterior cerebral artery would result in?
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loss of strength and sensation in the lower part of the body
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an occlusion of the middle cerebral artery would result in?
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predominantly affects strength and sensation in the upper regions of the body
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if you were to inject contrast material into an artery in order to outline the blood vessels of the cerebral circulation, which side would you do so and why?
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the Right side starting at the R brachial artery *demonstrating front and back cerebral circulations. Left side would only demonstrate post. circ. since L carotid arises dir from aorta
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where do the veins of the brain drain into?
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internal jugular
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where are spinal taps performed?
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in the largest cistern "lumbar cistern" between L2 and S2
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difficulty forming words
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dysarthria
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difficulty with gait or balance?
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ataxia
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what does weakness made worse with repeated effort and improved with rest may suggest?
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myasthenia gravis
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a sensation of tingling, pricking, or numbness
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parasthesias
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distorted sensations in response to a stimulus that may last longer than the stimulus itself
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dysesthesias
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tonic-clonic motor activity, bladder or bowel incontinence and postictal state suggest?
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a generalized seizure
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a paroxysmal disorder caused by sudden excessive electrical discharge in the cerebral cortex
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seizure
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what type of stroke is more common?
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ischemic 85%
hemorrhagic 15% |
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what are most strokes caused by?
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thromboembolism.
other causes: local injury to vascular wall, *atherosclerosis. inflammation, dissection, viscosity changes, b.v.rupture |
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difficulty in articulating words due to disease of the central nervous system
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dysarthria
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A partial or total loss of language skills due to brain damage. Usually, damage to the left perisylvian region, including Broca's area and Wernike's area
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aphasia
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what is the MC brain tumor?
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glioma
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an acquired decline in cognitive function, insidious
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dementia
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what are the 3 categories for disorders of speech?
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the voice
articulation production/comprehension |
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P presents with dysphonia, your initial differential should include?
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laryngitis
laryngeal tumor unilateral vocal cord paralysis (CN X) |
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defect in the muscle control of the speech aparatus (lips, tongue, palate, pharynx)words may be nasal, slurred, indistinct. central symbolic aspect of language remains intact
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dysarthria
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what would be some causes of dysarthria?
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motor lesions of the CNS or PNS, parkinsonism and cerebellar disease
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a disorder that is usually caused by lesions of the dominant cerebral hemisphere, that the person cannot produce or understand the language
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aphasia
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what are the two common types of aphasia
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wernicke's
broca's |
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sentences that lack meaning, words are malformed
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paraphasias
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invented words
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neologisms
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where is the lesion in Wernicke's aphasia?
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posterior superior temporal lobe
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where is the lesion in broca's aphasia?
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posterior inferior frontal lobe
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lack of content in speech, typical of schizophrenia
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alogia
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lack of interest, drive and ability to set and pursue goals, typical of schizophrenia
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avolition
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what are some functions tested to verify higher cognitive functions?
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info and vocab:life
calculating ability: math abstract thinking: proverbs Comparisons Constructional: draw a clock MMSE. |
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a depressed mood and symptoms for most of the day, over the last 2 years, freedom from s/s no > 2 months at a time
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dysthymic disorder
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an observable, usually episodic, feeling or tone expressed through voice, facial expression and demeanor
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affect
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a more sustained emotion that may color a person's view of the world
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mood
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