Basal Ganglia Flashcards Preview

Neuroanatomy > Basal Ganglia > Flashcards

Flashcards in Basal Ganglia Deck (12):
1

Functions

to suppress unwanted cortical activity
to facilitate wanted cortical activity

2

Pathologies

inability to suppress unwanted motor activity (chorea, myclonus, athetosis), inability to initiate movement (akinesia), rigidity (hypertonia NOT velocity dependent), tremors (resting)

3

What makes up the striatum ?

caudate nucleus and putamen nucleus

4

What are the mescencephalic portions of the basal ganglia?

substantial nigra (pars compacta and pars reticulata)

5

Bounded medially to the ventricles and laterally to the internal capsule

caudate nucleus

6

Lies lateral to the internal capsule, flattended lens-shaped nucleus, lateral to it is the external capsule

putamen

7

Out of the caudate and putamen, which receives input from the motor cortex and which receives input from the non-motor areas of the cortex

Caudate: non-motor
Putamen: motor

8

made up of the pars interna and the pars externa

globus pallidus

9

major effect nucleus of globus pallidus

pars interna

10

internal relay nucleus of globus pallidus

pars externa

11

sends input to the subthalamic nucleus

pars externa

12

receives input from the subthalamic nucleus

pars interna