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Neuroanatomy-spring'16 > Lecture 9 > Flashcards

Lecture 9 Flashcards

(46 cards)

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1
Q

what is motor equivalence

A

muscle action that is more abstract rather than one that is completed by a prescribed set of muscle activation…

can write name with hand, foot, teeth

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2
Q

main fn of ventromedial pathways

A

posture + balance

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3
Q

main fn of lateral pathways

A

skilled/fine movements

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4
Q

which pathway does NOT have subcortical origins (and where does it originate from)?

A

corticospinals

motor cortex

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5
Q

medial vestibulospinals project?

A

bilaterally

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6
Q

lateral vestibulospinals project?

A

ipsilaterally

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7
Q

reflexes of vestibulospinal

A

VCR
VOR
VSR

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8
Q

type of projections from reticulospinal

A

bilateral

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9
Q

which pathway is involved in postural adjustments for anticipated movements

A

reticulospinal

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10
Q

which system involved in postural adjustments for UNanticipated movements

A

vesitbuliar

proprioceptors

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11
Q

what does medial reticulospinal
excite?/excited by?
inhibit?/inhibited by?

A

excite: extensors + flexors

inhibited by: higher centers

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12
Q

what does lateral reticulospinal
excite?/excited by?
inhibit?/inhibited by?

A

excite: upper flexors
inhibit: ALL extensors
excited by: higher centers

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13
Q

colliculospinals travel in which direction to the cervical cord

A

contralateral

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14
Q

FN of colliculospinal

A

head orienting movements because superior colli activated

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15
Q

what do corticobulbars innervate

A

RF
RN
PN
CN ( no 3,4,6)

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16
Q

corticospinals innervate

A 
RF
RN
BG
VN
PN
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17
Q

lateral cortices triggered by

A

external events

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18
Q

supplementary motor (medial) cortices triggered by

A

internal events

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19
Q

fn of vestibulospinal

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A

posture + eye mvmts

use: axial, limb, eye muscles

20
Q

fn of reticulospinal

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A

posture + mvmts

use: proximal muslces

21
Q

fn of tectospinal

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A

head orienting mvmts

use: neck muscles

22
Q

fn of ant corticospinal

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A

posture + mvmt

use: axial + proximal muscles

23
Q

fn of corticospinal

Study These Flashcards
A

skilled mvmts

use: distal muscles

24
Q

fn of rubrospinal

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A

proximal arm flexors

25
rubrospinal ori
red nucleus
26
rubrospinal input?
BS + Cerebellum
27
where does rubrospinal decussate
ponds
28
which tract does rubrospinal join
corticospinal
29
where rubrospinal travel
lateral cord
30
what does rubrospinal innervate
(proximal) arm flexors
31
medial longitudinal vestibulospinal projects to? via?
CN 3,4,6 (VOR) neck muscles via: medial longitudinal fasiculus
32
lateral longitudinal vestibulospinal projects ot?
limb motor neurons | cerebellum
33
medial vestibulospinal comes from __ part of ear?
canals
34
lateral vestibulospinal comes from __ part of ear?
otolith organs
35
anterior corticospinals use ___ funiculus
ventromedial
36
lateral corticospinals use ___ funiculus
dorsolateral
37
where are corticospinals found/originate
caudal medullla
38
corticospinal composition
60- area 4 (primary motor cortex), 5% betz 30- area 6 (premotor) 10- somatosensory + cingulate cortex
39
supplementary motor (medial) cortices use?
ACC
40
BF inc in ___ during simple finger flexion
primary sensory and motor cortices
41
BF inc in ___ during sequential finger mvmts
medial motor cortices
42
BF inc in ___ during imaging finger flexion
medial motor cortices
43
lateral motor imagines or observes action?
observes
44
medial motor imagines or observes action?
imagines
45
where is lesion btwn in decerebrate rigidity?
pons and midbrain (mesencephalon)
46
where is lesion btwn in decorticate rigidity?
above red nuclei

Neuroanatomy-spring'16 (18 decks)

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