Upper Motor Flashcards

1
Q

What are some structures for upper motor control?

A

Motor cortex, cerebellum, basal ganglia

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2
Q

List 3 things cerebellum is involved in

A

Balance
Posture
Learning

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3
Q

What are the 3 functional regionals of the cerebellum and what they are associated with

A
  • vestibulocerebellum: balance
  • spinocerebellum: posture
  • cerebrocerebellum: learning
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4
Q

Which lobe receives input from most fibers in the vestibulocerebellar pathway

A

Floculonodular lobe

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5
Q

The vestibular nuclei receives input from?

A

Vestibular labyrinth

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6
Q

A lesion of the vestibulocerebellar pathway disrupts the ability to ?

A

Use vestibular feedback to coordinate gaze and balance

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7
Q

Which functional region receives spinal/trigeminal/auditory and visual input and regulates movement precision?

A

Spinocerebellum

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8
Q

The vestibulocerebellum controls balance and eye movements via the ______________

A

Vestibular nuclei

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9
Q

Output from cerebellum sends feedback in the motor learning pathway via what to the motor thalamus?

A

Red nucleus

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10
Q

What do basal ganglia do?

A

Facilitate or inhibit movement

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11
Q

Is motor planning and execution in basal ganglia direct or indirect pathway?

A

Direct

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12
Q

The striatum of basal ganglia includes:

A

Caudate and putamen

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13
Q

What is the source of basal ganglia’s inhibitory projection to motor thalamus and cortex?

A

Globos pallidus

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14
Q

The subthalamic nucleus excites the _____________

A

Globus pallidus

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15
Q

The substantial nigra excites and inhibits the ___________

A

Striatum

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16
Q

What do basal ganglia do?

A

Selection, planning, and initiation of voluntary movements/ suppression of involuntary behaviors

17
Q

List the 3 main components in the motor loop

A

Cortex
Basal ganglia
Thalamus

18
Q

Inhibition of the cortex is done by ____________ indirect/direct pathways

A

Indirect

19
Q

T/F Glutamate is always excitatory

A

True

20
Q

If dopamine is in D2 receptor, is it inhibitory or excitatory?

A

Inhibitory

21
Q

D1 and D5 receptors are ____________ (excitatory/inhibitory)

A

Excitatory-direct

22
Q

Which dopamine receptors are inhibitory?

A

D2 and D4

23
Q

What are some disorders associated with the basal ganglia?

A

Parkinson’s and Huntington’s