14 - Basal Ganglia and Movement Disorders Flashcards Preview

MBB > 14 - Basal Ganglia and Movement Disorders > Flashcards

Flashcards in 14 - Basal Ganglia and Movement Disorders Deck (12):
1

Parts of the basal ganglia

Caudate, putamen, globus pallidus, subthalamic nucleus, substantia nigra

2

Parts of the striatum

Caudate and putamen

3

Parts of the lenticular nucleus

Globus pallidus and putamen

4

Characteristics of hypokinetic movement disorder

Akinesia, bradykinesia, rigidity, stooped posture, retropulsion (a form of postural instability), aprosody, masked facial appearance, small handwriting

5

Characteristics of hyperkinetic movement disorder

Chorea (hemiballismus, athetosis, dyskinesia (dopamine dyskinesia, tardive dyskinesia)), tremor (parkinsonian, essential), tic, dystonia

6

Different types of chorea and their differences

Hemiballismus - sudden, fling-like motion on one side
Athetosis - slow writhing movement of trunk and extremities
Dyskinesia - chorea due to iatrogenic conditions

7

Different types of tremors

Parkinsonian tremor - 4-6 Hz, pronation/supination of forearm with "pill rolling tremor"
Essential tremor - 8 Hz, fine to medium amplitude, persists and worsens with purposeful movement, suppressed temporarily with alcohol (not motor basal ganglia system)

8

Input nuclei of basal ganglia

Caudate (saccadic eye mvmt, cognitive function) and putamen (motor control)

9

Output nuclei of basal ganglia

Internal segment of globus pallidus and SN pars reticulata

10

Hypokinetic movement disorder lesion locations

SN pars compacta, globus pallidus, or putamen (excitatory)

11

Hyperkinetic movement disorder - chorea lesion locations

STN or putamen (inhibitory)
Note: hemiballismus often has contralateral STN lesions

12

Hyperkinetic movement disorder - dystonia lesion locations

Putamen