Cerebellum + Basal Ganglia Anatomy Flashcards
how many lobes does the cerebellum have
3
- anterior
- posterior
- floccular
how is the cerebellum attached to the brainstem
via peduncles
what are the 3 layers of the cerebellum
molecular - outer
purkinjie - middle
granular - inner
which layer of cerebellum outputs efferent signals
purkinjie
which layer of the cerebellum receives afferent signals
granular
lesions in the cerebellum affect which side
the same side
symptoms of cerebellar disease
DANISH
- Dysdiadokinesis
- Ataxia
- Nystagmus
- Intention tremor
- Slurred speech
- Hypotonia
functions of the basal ganglia
facilitate purposeful movement
inhibit unwanted movement
control of posture + muscle tone
name the 5 basal ganglia
caudate nucleus putamen globus pallidus subthalamic nucleus substantia nigra
what basal ganglia make up the striatum
caudate nucleus
putamen
what basal ganglia make up the lenticular nucleus
putamen + globus pallidus
what are the 2 parts of the substantia nigra called
pars compacta
pars reticulata
why does the substantia nigra appear black
high numbers of dopamine neurone that express neuro-melanin
what side do lesions in the basal ganglia affect
the contralateral side
symptoms of basal ganglia dysfunction
changes in muscle tone
dyskinesia - abnormal involuntary movements
chorea - rapid, asymmetrical movements
myoclonus - muscle jerks
