BASAL GANGLIA - MODULE Flashcards
What two structures make up the lentiform nucleus
- Putamen
- Globus Pallidus
What two structures make up the striatum
- Cuadate
- Putamen
What are the two parts of the globus pallidus
Globus pallidus internal (medial)
Globus pallidus external (lateral)
Outflow from the globus pallidus travels via ______
Ansa lenticularis
The ansa lenticularis has ______ projections to the thalamus
GABA-ergic
What regulates cortical input and output?
THe thalamus
The thalamus is under chronic activation or chronic inhibition?
Chronic inhibition
The Caudate and Putamen receive ____ input from the cortex and substantia nigra
excitatory input
Where does the caudate and putamen receive excitatory input from
the cortex and the substantia nigra
What type of neurons project from the caudate and putament to the globus pallidus
inhibitory neurons
What is the result of inhibitory neurons projecting to the globus pallidus
Inhibits the inhibitory neuron which goes to the thalamus, this results in more motor output
create proper notes for direct and indirect pathways
self study
What does the direct pathway do
facilitates target orientated movements
What does the indirect pathway do
inhibits competing movements
Together, the direct and indirect pathways create….
streamline cortical output
