Review Questions Flashcards
what auto immune disease produces antibodies against the acetylcholine receptors?
Myasthenia gravis
degrees of weakness increases with activity and improves with rest
motor dysfunction without sensation, cognitive, or autonomic symptoms
what disease is an immune related response in which the antibodies induce demyelination and oligodendrocyte apoptosis?
multiple sclerosis
Neurologic symptoms
decerebrate rigidity
occurs with transections of the brainstem between the midbrain and the pons
may be present persistently or elicited by stimuli
plantarflexion, extension of arms, extension of neck, wrist flexion - rigidity
decerebrate rigidity
decorticate rigidity
occurs with transections superior midbrain, or severe bilateral lesions of the cerebral cortex
Higher up damage
neck extended, plantar flexion, elbows flexed, wrists flexed, internally rotated upper extremity- rigidity
decorticate rigidity
medial motor tracks
postural proximal muscle control
reticulospinal
Medial vestibulospinal
Lateral vestibulospinal
Medial corticospinal
lateral motor tracts
Fractionated movement
Distal muscle control
Rubrospinal
Lateral corticospinal
reticulospinal
postural and gross limb movement
APAs, reaching, neck reflexive movement
medial vestibulospinal
postural, neck and upper back
medial corticospinal
Neck, shoulder, trunk muscles
lateral vestibulospinal
postural, extensors
rubrospinal
Distal upper extremity extensors
lateral corticospinal
Fractionation
upper motor neuron signs and symptoms
paresis
Hyperreflexia
Hypertonia
Positive Babinski
spasticity, exaggerated reflexes
lower motor neuron signs and symptoms
Paresis with atrophy
Hyporeflexia
Hypotonia
Absence of Babinski
weakness , muscle atrophy
cell bodies are located in ventral horn of spinal cord