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Neuroscience 1 > Movement part 2 (II) > Flashcards

Movement part 2 (II) Flashcards

1
Q

corticobulbar tract

A

controls movements of face, tongue, and eye muscles (all movement of face)

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2
Q

trigeminal

A

CN5
move face
LMN for corticobulbar

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3
Q

facial

A

CN7
move face muscles
LMN for corticobulbar

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4
Q

glossopharyngeal

A

CN9
throat
LMN for corticobulbar

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5
Q

vagus

A

CN10
throat and palate
LMN for corticobulbar

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6
Q

Spinal accessory

A

CN11
neck and shoulder muscles
LMN for corticobulbar

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7
Q

hypoglossal

A

CN12
tongue
LMN for corticobulbar

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8
Q

cerebral cortex

A

controls body muscles via commands sent through corticospinal system

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9
Q

lateral corticospinal tract

A
  • corticospinal system

- movements of distal limbs

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10
Q

ventral corticospinal tract

A
  • corticospinal system

- movements of upper legs, trunk, arms

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11
Q

which tract is important for locomotion and posture?

A

ventral corticospinal

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12
Q

chorea

A
  • brief, involuntary movement

- HD

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13
Q

dystonia

A
  • abnormal postures

- HD

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14
Q

HD

A

degeneration of striatal MSNs containing dopamine D2 receptors

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15
Q

inhibition for HD

A

GABA

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16
Q

excitation for HD

A

glutamate

17
Q

PD

A

loss of nigrostriatal DA projection

18
Q

tremor

A
  • shaking

- PD

19
Q

bradykinesia

A
  • slow movement or inability to produce movement at all

- PD

20
Q

Rigidity

A
  • results in shuffling of feet to move

- PD

21
Q

cerebellum

A
  • receives information from the motor cortex about an intended movement.
  • determines the timing of muscular contractions
22
Q

the cerebellum uses information from the vestibular system to…

A
  1. maintain posture and balance
  2. refine movements
  3. control eye movements that compensate for head movements
23
Q

motor sequences

A

supplementary motor area

24
Q

begins programming movement

A

premotor cortex

25
Q

uses information about body and world to select movement and target

A

prefrontal cortex

26
Q

modulation/smoothing

A

cerebellum

27
Q

movement execution

A

primary motor cortex

28
Q

body information such as limb positions

A

primary somatosensory cortex

29
Q

body part locations

A

posterior parietal cortex

30
Q

as movement proceeds, cerebellum receives proprioceptive signals about the actual motor performance from the vestibular system

A

cerebellum

31
Q

receives a copy of movement plan that muscles will receive from motor cortex

A

cerebellum

32
Q

sends corrective signals to cortex and brainstem when there are errors or deviation from the original plan

A

cerebellum

Neuroscience 1 (15 decks)

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