E3 basal ganglia Flashcards
1
Q
direct pathway
A
disinhibits VA and PPN to promote initiation/synergies and inhibit posture
2
Q
indirect pathway
A
inhibits VA and PPN to inhibit initation/synergies
facilitates posture
3
Q
should draw overall path
A
d
4
Q
parkinsons disorder
A
damage to dopaminergic SNc underactive direct pathway leading to over inhibited VA overactive indirect pathway further inhibits VA difficulty with initiation and other things
5
Q
huntington chorea
A
damage to indirect part of striatum underactive indirect path leading to overactive VA involuntary movements later gaba cells degererate in direct path underactivity initiation problems
6
Q
hemiballismus
A
damage to subthalamic nucleus
decrease in GPi and SNr activity so overactivity of VA thalamus
contralateal