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16 Cards in this Set

  • Front
  • Back
Lower Motor Neuron Deficits are characterized by:
-Enduring Flaccid Paralysis
-Rapid Muscle or Atrophy
-Fasciculations of affected Muscle
-Hypotonia
-Hyporeflexia or Areflexia
Ex of Lower Motor Neuon Disease
Polio and Amyotrophic Lateral Sclerosis
Upper Motor Neuron Lesion symptoms
-Spascticity
-Hypertonia
-Clonus
-Clasps Knide Response
-Altered cutaneous reflexes including the abdominal, cremasteric, Babinski and Hoffman signs
-Autonomic Dysreflexia
Typical upper motor neuron lesion is a lesion of the
Pyramidal System either in Cerebral Cortex or along its pathway
Lesions of the hypothalamospinal tract contribute to
autonomic dysreflexia
(problems with primarily sympathetically mediated autonomic activity)
Lesions of the dorsal column produce loss or reduction of:
Epicritic touch
Vibration
Position sense
Dorsal column lesion in the spinal cord will produce functional loss ______
Ipsilateral
Dorsal column lesion in the medial lemniscus will produce functional loss ______
Contralateral
an example of a pathology that often produces degeneration in the dorsal column system
Tabes dorsalis (neurosyphilis)
Lesions of the anterolateral system will produce
a contralateral loss of pain, temperature and protopathic touch sensation
-typically 1-2 segments below the lesion in the spinal cord
Syringomyelia
example of an anterolateral system lesion that is often bilateral and usually affecting cervical segments 1st
Lesion of the Spinocerebellar tracts in the spinal cord
Do not generally produce isolated clinically distinuishable symptoms
Neuropraxia
the function of the axon may be disrupted without physcial injury of the axon
-like a nerve pressure block
Axonotmesis
axon within a nerve is disrupted, but the connective tissue scaffold(endo, peri and epineurium) is intact
-over stretching
Neurotmesis
Axons and the connective tissue structure of the nerve are both disrupted
-cutting injuries or other severe trauma
Neuromas
a mass of axons and connective tissue that prevents the axon from continuing to grow towards its target. Removal of the neuroma is necessary for repair.