N40-N43 Flashcards Preview

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Flashcards in N40-N43 Deck (17)
1

LMN lesion

hyporeflexia, flaccid, hypotonia, fasciculations, fibrillations, profound severe atrophy,

2

UMN lesion

hypereflexia, hypertonicity, spastic, clonus, babinksi sign (+), muscle weakness, disuse atrophy

3

Lesion of MI superior to spinomedullary junction

muscle weakness (PARESIS) on contralateral side, noticed for distal muscles (fine movements)

4

PMC lesion

(uncoordinated complex tasks) NO paresis, strength and tone normal; APRAXIC: impaired ability to form complex movement, simple movements intact

5

Perseveration

tendency to continue certain movement, even though movement is unsuccessful; reflex intact

6

SMA lesion

(uncoordinated bilaterally) inability to coordinate actions between sides; no weakness

7

PMA lesion

Apraxia; NO weakness; inability to incorporate sensory into motor (agraphesthesia and astereognosis) = motor disturbances for complex movement

8

FEF lesion

unilateral lesion = inability to look to contralateral side

9

Cerebellar lesion

ipsilateral; ataxia, dysmetria (how far away something is), dysdiadochokinesia (rapid movement impairment), tremor during movements, slowed movement and speech

10

Basal ganglia lesion

akinesia (can't move), dyskinesia (abnormal movement), either hypertonic or hypotonic,

11

Parkinsonism

akinesia and HYPERtonia, decreased dopamine; cog-wheel tremors, shuffling

12

Chorea

dyskinesia and HYPOtonia: lesions to corpus striatum, loss of ACh, irregular, brisk, jerking movements

13

Tremore-at-rest

dyskinesia and HYPOtonia; tremor present during inactivity

14

Athetosis

slow, writhing movements of muscles (worm like)

15

Ballism

lesion to subthalamic nucleus, contralateral side = unwanted jerking movements

16

Decorticate

b/w motor cortex and brainstem. loss of CST, while rubrospinal tract and VST are intact causing flexion of upper arms and extension of lower

17

Decerebrate

b/w superior and inferior colliculi; CST and RST lost, VST still intact for extension