basil ganglia (dr driscoll) Flashcards
D2 (dopamine) receptors are EXCITATORY/INHIBITORY
inhibitory
D1 (dopamine) receptos are EXCITATORY/INHIBITORY
excitatory
direct pathway in basal ganglia =
DO IT
indirect pathway in basal ganglia =
DONT do it
when the thalamus is inhibited, action occurs/doesnt occur
DOES NOT occur
when the thalamus is disinhibited, action occurs/doesnt occur
DOES occur
the direct loop uses the globus palidus (internal/external)
GPi
the inderect loop uses the globus pallidus (internal/external)
both GPi and GPe
what tract leaves the mammilary bodies
mamilothelamic tract
what type of information does the mammilothelamic tract carry
emotional
the neostraitum is made up of
caudate nucleus + putamin
caudate + putamin =
neostraitum
paleostraitum is made up of
globus pallidus (internal + external)
GPe + GPi =
paleostriatum
ventral striatum is made up of
subthalamus, nucleus acumbens, and olfactory tubricle
subthalamus + nucleus acumbens + alfactory tubricle =
ventral striatum
the lenticular nucleus is made up of
putamin + globus pallidus
globus pallidus + putamin =
lenticular nucleus
basil ganglia (main/overall function)
decides/selects what movements will actually occur and which will not
basal ganglia 4 main functions
- selection of willed movements
- innitiation and termination of movement
- inhibition of muscle tone
- formation and/or execution of procedural memory
straitum is made up of
caudate, putamin and nucleus acumbens
caudate + nucleus acumbens + putamin =
straitum
corpus straitum is made up of
caudate, putamin, globus pallidus
caudate + putamin + globus pallidus =
corpus straitum
SNc stands for what
substantia nigra pars compacta
the subthelamic nucleus is excitatory/inhibitory
excitatory
