Motor control 2 Flashcards

1
Q

what is the funciton of high, middle and low motor contorl

A

high - strategy
middle tatics
low - execution

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2
Q

where does high motor contorl originate from

A

neocortex, basal ganglion

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3
Q

where does lower motor contol originate from

A

motor cortex, cerebellum

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4
Q

where does low motor cortex originate from

A

brainstem and spinal cord

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5
Q

what is the ventromedial pathaways and the lateral pathways associated with

A

venteromedial - posture and locomotion
lateral pathways - voulatio muovemtn of distal musles

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6
Q

where does most of the corticospinal tract originate from

A

2/3 from areas 4 and 6 of the fronalt motor cortex
rest 1/3 somatosensory

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7
Q

where does the cst cross over

A

medulla/ spinal cord junction

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8
Q

where does the rubrospinal tract cross

A

betwee midbrain and meduslla

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9
Q

effect of lesion on cst and rst

A

loss off fine movemtns of hands and arms
can’t move the shoulders, elvows or wrist independiy

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10
Q

what happens if the cst if damgaged but the rst is undamaged

A

loss off fine movemtns of hands and arms
can’t move the shoulders, elvows or wrist independiy

but this will fix after a few months as the rest will restore function

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11
Q

roel of rst

A

movement of joints, minaly flexors

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12
Q

waht can the actio of cst neurons do a the pymidial dessicants

A

they can exitore or antagonsie other neuons

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13
Q

role of the tectospinal tract

A

ensure the eyemovement remain stable with the rest of the body

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14
Q

what is the fucntion of the vestiublopinal tract

A

stabilises head and neck

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15
Q

what are the vesibulospinal and tectospinal tracts a part of

A

ventromedial pathway

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16
Q

where does the ventromediol pathway start

A

brain stem

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17
Q

function of the ventromeidal pathway

A

controll balance and posture and cause antigravity muels to act

18
Q

what are the brainhes of the ventroedmal pathway

A

potein and medullary retriculspinal tracts
vestibulospinal tract
tectospinal attracts

19
Q

how does the motro cortex allow voluntarary movemnt when the ventorcmetal pathway is activw

A

can block or alter it to allow movemnt

20
Q

somatotopci

A

means that a spefica area of the brain is attached to a certain movement

21
Q

waht are lower motor neurons conencted to

A

upper motor neurons through the white matter of the spinal cord

22
Q

fucntion of lower motor neruiosin in latearl horn

A

control distoal mucles of lims

23
Q

what do the upper motor nurions in the brain stem connect to

A

lower motor nurons in the medial ventral horn
n

24
Q

fucntio fo the lower motro nruon in media ventoral horn

A

control axial and proximal limb musles in posture and balaance

25
Q

what are of the brain is the primary motor area

A

4

26
Q

what area of the brain is the pre motor area

A

6

27
Q

does the homunclus differ in motor and sesnotyr cortex and premorto crotex

A

not really, amage area sof brain

28
Q

how do epiliecti seizure presnt in terms of homunculus

A

first start in finger, then hand , then arm, ehen face

29
Q

which area is epileis noramly asoieced with

A

4

30
Q

what does area 6(premotor ) contain

A

sma - supplementary motor area
pma - proximal motor units

31
Q

what does hte sma control

A

planning and cooridat movemnts in hands
connects to it directly to motor nruo sand musles fibers

32
Q

pma controls

A

mainly uses sensory infomatio to help to conrl the rest of te body

33
Q

what is the area 4 movemntes mainly assoiced

A

it is fucnitos that are like hand to mouth and not just one movenets

34
Q

what parts of brain gernatres mentla image

A

somatosentosr, propiroepi and visul impus form areas 5 and 7

35
Q

where are actions carried out in brain

A

area 6

36
Q

if you are thinking about moving will area 4 activate

A

no only area 6

37
Q

what part of area 6 mianly fires in anticpate

A

pma

38
Q

how long does pma fibers take to get a response

A

1 seconds to make moements

39
Q

what area is associated with mirroroing

A

area 6

40
Q
A