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UMN v. LMN

Symptoms of Upper Motor Neuron & Lower Motor Neuron Lesions; Characteristics

QuestionAnswer
spastic paralysis or weakness UMN
no signs of muscle denervation UMN
increased muscle tone UMN
Positive Babinski's sign UMN
Increased reflexes UMN
Involvement of multiple muscles or limbs (monoplegia, hemiplegia, or quadriplegia) UMN
Flaccis paralysis or weakness LMN
muscle denervation: fibrillations, fasciculations, and muscle atrophy LMN
decreased muscle tone LMN
no Babinski's or cremasteric reflexes LMN
decreased reflexes LMN
involvement of a single limb or selected muscle LMN
Created by: sullivancl
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