22. Cerebellum And Basal Ganglia Flashcards
Most important function of cerebellum is :- By:- When cerebellum is impaired :- Patient cannot stop at :- Past pointing :- Cerebellum has .....cells ......nuclei ......parts/fuction
93
5 cells are All cells are :- Except :- 1. 2. 3. 4. 5.
93
4 nuclei :- 1. 2. 3. 4.
93
3 parts / fuction : -
1.
2.
3.
93
Input ( afferent / sensory )
From 2 sources :-
1.
2.
94
Layers of cerebellum:-
- :- a) & b)
- :- a) & b )
94
Inferior olivary nucleus pathway :-
Spinal cord pathway:-
94
Feed forward inhibition :-
By :-
Stimulate :-
95
Parts of cerebellum :-
1.
2.
3.
95
Spinocerebellum :- Fuction :- Nucleus involved :- 1. 2. 3.
95
Vestibulocerebellum :- Aka a :- Fuction 1. 2. 3. Nucleus :-
95
New cerebellum :-
Fuction :-
Nucleus involved :-
Largest nucleus :-
95
Cerebellum lesion :- 1. 2. 3. 4. 5. 6. Only during :- .
96
Basal ganglia :- At rest it is :- Fuction 1. 2.
96
Nuclei in Basal ganglia :- and NT secreted :- 1. 2. 3. 4. 5. Only excitatory is :-
96
Startu. =
Input neclei :-
Output nuclei :-
Let inform nucleus is :-
96;
Basal Ganglia pathway :-
Direct pathway leads to :-
Indirect pathway :-
97
Direct pathway
Inhibition of :- Leads to :- Motor cortex :- Striatum ( caudate + putamen ) :- GP internus :- Thalamus ( VA nucleus )
97
Inhibition of :-
Leads to :-
Motor cortex :-
Striatum ( caudate + putamen ) :-
GP EXTERNUS :-
Subthalamic nuclei
GP internus
Thalamus ( VA nucleus )
97
Indirect pathway :-
GP externus :-
GP internus :-
The subthalamic nuclei escapes :-
98
Substantial nigra :- NT :- Via D1 receptor Activates :- Cause :- Via D2 receptor :- Inhibit :-
Overall activity of dopamine :-
98
Basal Ganglia lesion :- Causes :- 1. Chorea due to :- 2.Athetosis due to :- 3. Hemiballismus due to :-
Absence of dopamine :-
Bradykinesia :-
Pill rolling tremors :-
98
