Mod 2: CNS/PNS Flashcards
“worms” under the skin d/t nerve & mm unit disconnecting
fasciculations
slow, twisting writhing movements that are large in amplitude (in UE/LEs)
athetosis
rapid, brief, irregular contractions
chorea
large amplitude chorea
ballism
sustained mm contractions that cause twisting, abnormal postures & repetitive movements of axial mm (trunk/head)
dystonia
involuntary, rhythmic, oscillatory movements
-resting, postural, intention
tremors
brief, repetitive coordinated movements that occur at irregular intervals
tics
inability to initiate movement
akinesia
generalized weakness d/t cerebellar pathology
asthenia
inability to perform coordinated movements
ataxia
resistance to movement that has a phasic quality to it
cogwheel rigidity
inability to perform rapid, alternating movements
dysdiadochokinesia
inability to control range of movement
dysmetria
LMN: damaged motor neurons in anterior horn
-compensated renervation fails & cause ongoing mm denervation
post-polio syndrome
PPS
precaution: ____
s/s:
careful not to fatigue
s/s: progressive weakness, mm atrophy, pain, dysphagia
LMN: autoimmune disease w/ deficit in transmission of nerve impulses at NM junction
-ACH uptake problem
Myasthenia Graves
s/s: extreme fatigue, skeletal mm weakness, ocular effects (ptosis, diplopia) ,dysphagia
Myasthenia graves
LMN: Hyperglycemia & microvascular disease causes nerve ischemia
diabetic neuropathy
Peripheral Nerve Lesions:
1- isolated nerve lesion
2-impairment/dysfunction of peripheral nerves
3-diffuse nerve dysfunction
4- abnormal growth of cells
1- mononeuropathy
2-peripheral neuropathy
3- polyneuropathy
4- neuroma
Peripheral Nerve Lesion:
acute nerve injury d/t myelin dysfunction
-nerve conduction preserved near lesion
-rapid recovery
neuropraxia