basal ganglia focused

Question 1

What function does the basal ganglia have?

Answer 1

Inhibit involuntary movements at rest (tremors)

Facilitate voluntary movements (initiate, continue, complete action)

Question 2

This nucleus forms the floor of the lateral ventricles and ends in the temporal horn of the lateral ventricle

Answer 2

Caudate nucleus

Question 3

What composes the corpus striatum?

Answer 3

The caudate nucleus

and the Lentiform nucleus

Question 4

What makes up the lentiform nucleus?

Answer 4

Puntamen
and
Globus pallidus

Question 5

What are the major inputs to the corpus striatum?

Answer 5

Corticostriate
Nigrostriate
Thalamostriate

Question 6

What are the major outputs from the corpus striatum?

Answer 6

Striatonigral fibers

Striatopallidal fibers

Question 7

What are the inputsof the pallidum?

Answer 7

Striatopallidal fibers

Subthalamic fasciculus.

Question 8

What are the outputs from the pallidum?

Answer 8

Pallidothalamic fibers
and
Pallidosubthalamic fibers

Question 9

Defne dyskinesia

Answer 9

Uninentional purposeless disorderly movements occuring at rest.

Question 10

Define athetosis

Answer 10

Slow vermicular involuntary movements caused by degeneration of lateral pallidum allowing thalamus to spontaneously fire to motor cortex!

Question 11

Define hemiballismus

Answer 11

Involuntary ballistic movements on on side of body due to cerebrovascular lesion of ganlial branch of posterior cerebral artery involving th contralateral subthalamic nucleus.

Question 12

Define bradykinesia

Answer 12

Reduced motion due to increased inhibition from the basal ganglia.

Question 13

What two signs must be present to define tourettes?

Answer 13

Motor and vocal tics

*Vocal tics are unique to tourettes.

Question 14

Is thre paralysis when the basal ganglia are lesioned?

Answer 14

NO