neuro disorders Flashcards
(29 cards)
A state where a stimulus that ordinarily would be slightly painful is perceived as very painful
hyperalgesia
A state where a stimulus would ordinarily be harmless is perceived as painful
allodynia
when nerve fibers are impaired, such as in chronic conditions…
neuropathy
am autoimmune disorder in which antibodies attack nicotinic acetylcholine receptors
myasthenia gravis
myasthenia gravis results from degeneration of the _____
neuromuscular junction
neurons from spinal cord to skeletal muscles - causing contractions
lower motor neurons
signs of lower motor lesion
weakness, hypoactive stretch reflex response, flaccidity, muscle atrophy
diseases associated with death of spinal cord motor neurons
polio, lateral sclerosis, spinal muscular atrophy
Sciatic and carpal tunnel syndrome are associated with
lower motor neuron lesion
presentation of upper motor neuron lesion
arm flexion and pronation, leg extension to affected side. Lack of fine hand movements, hyperreflexia.
weakness, loss of fine coordinated movements, hyperreflexia, spasticity, rigidity in arm flexor and leg extensor
upper motor neuron lesion
example of an upper motor neuron lesion
stroke or other damage to motor cortex in the brain.
death of DA neurons in the substantia nigra
Parkinson’s Disease
overactivity of excitatory acetylcholine transmission in the striatum
Parkinson’s disease
Resting tremor, bradykinesia, rigidity
Parkinson’s disease
accumulation of proteins in the brain
Parkinson’s Disease with Lewy bodies
formulation of amyloid B aggresgates creating plaques
Alzheimer Disease
Phosphorylation of Tau protein leading to tangle formation in the extracellular space
Alzheimer disease
Buildup of B-amyloid protein (plaques) between neurons
Alzheimer disease
90% of CVAs due to
thromboembolism
hemorrhagic strokes are often due to ___
aneurysm or hypertension
stroke-like manifestations that resolve spontaneously
TIA
Often affects basal ganglia and internal capsule with severe motor manifestations
CVA
Increased amygdala and hippocampal activity
Anxiety