Cerebellum and Basal Ganglia

Question 1

What type of muscle does Cerebellum coordinate?

Answer 1

Skeletal muscle

Question 2

Name the lobes of the cerebellum

Answer 2

Anterior, posterior, flocculonodular lobe

Question 3

What dural structure covers superior aspect of cerebellum?

Answer 3

Tentorium cerebelli

Question 4

What connects the cerebellum to the brainstem?

Answer 4

3 peduncles: superior, middle and inferior

Contain white fibres to communicate to and from cerebellum

Question 5

Describe the grey and white matter of the cerebellum

Answer 5

Outer grey
Inner white called Arbor Vitae
Innermost grey called deep cerebellar nucleus

Question 6

Name for cerebellar gyri

Answer 6

Folia

Question 7

Name the cell layers of the cerebellum

Answer 7

Outer molecular
Middle Purkinje
Inner Granule

Question 8

Describe efferent signals from the cerebellum

Answer 8

Purkinje cells talk to deep nucleus that talks to brain stem that talks to brain

Question 9

Describe afferent signals to the cerebellum

Answer 9

Come from spinal cord, cerebral cortex and vestibular apparatus
Arrive at cerebellum via peduncles and head to granular layer

Question 10

A legion on left of cerebellum would cause symptoms on what side of body

Answer 10

left

Question 11

Name the parts of basal ganglia

Answer 11

Caudate nucleus
Putamen
Globus pallidus
Subthalamic nucleus
Substantia nigra

Question 12

What does substantial nigra produce?

Answer 12

Dopamine

Question 13

Function of direct pathway?

Answer 13

Enhancement of normal, desired movements. Prevents inhibitory signals from indirect pathway

Question 14

Function of indirect pathway?

Answer 14

Prevent unwanted movements by inhibiting thalamic outflow

Question 15

If there is a legion on left basal ganglia what side of body would there be symptoms?

Answer 15

Right

Question 16

Name two diseases due to basal ganglia dysfunction

Answer 16

Parkinsons, Huntington’s