cerebellum part 1 Flashcards

1
Q
A
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2
Q

tf Cerebellum give rise to descending motor pathways.

A

Cerebellum does not give rise to descending motor pathways. Ø

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3
Q

tf Damage to the cerebellum or its pathways DOES cause paralysis

A

Damage to the cerebellum or its pathways DOES NOT cause paralysis

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4
Q

Input to cerebellum is

A

sensory

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5
Q

Output of cerebllum

A

travels to motor structures

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6
Q

rate, range, direction or accuracy of motor movements.

A

is disturbed by damage to the cerebellum

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7
Q

cerebellum

A

modulates motor output

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8
Q

in addition to motor output cerebllum

A

modulates complex behavioral and cognitive functions

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9
Q

receives and processes vestibular information

A

flocculonodular lobe

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10
Q

nodulus is

A

medial flocculonodular

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11
Q

flocculus is

A

flocculus is lateral part of flocculonodular lobe

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12
Q

tf flocculonodular lobe is post to post lobe

A

f

ant to it

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13
Q

posterior lateral fissure

A

sep flocculonodular lobe and posterior lobe

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14
Q

Lateral Hemisphere

A

forms the bulk of the cerebellum

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15
Q

Paravermis:

A

Paravermis: R and L zones adjacent to the vermis

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17
Q

Molecular layer

A

contains local circuit neurons and abundant axons and dendrites.

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18
Q

.Purkinje cell layer (middle layer):

A

formed by a single layer of large neurons called Purkinje cells(PCs)

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19
Q

Granular layer (deep layer):

A

composed mainly of small granule cells, but also contains other cell types.

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20
Q

t The white matter core of the cerebellum is t

A

he location of the deep white matter cerebellar nuclei (DCN).

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22
Q

most medial of deep cerebellar nuclei (DCN)

receives projections from vermis

A

Fastigial nucleus •

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23
Q

lateral to fastigial n.

receives projections from paravermis

A

Globose nucleus

24
Q

Emboliform nucleus

A

lateral to globose n

receives projections from paravermis

25
Q

Dentate nucleus

A

• most lateral •

receives projections from lateral hemisphere

28
Q

trunk is represented in

A

the midline region (vermis) of cereblar cortex

29
Label wat is missing on cerebllar cortex
30
31
Inferior Cerebellar Peduncle
afferents to cerebellum from spinal cord & medulla.
32
Middle Cerebellar Peduncle
o Mainly afferents to cerebellum from pontine nuclei
33
Superior Cerebellar Peduncle
Mainly efferents from the cerebellum.
34
highly convoluted, forming the cerebellar folia
cerebellum
36
37
38
(1.) cerebellar cortical region (2.) cerebellar nucleus/nuclei
Functional systems associated with the cerebellum
42
Buried within the white matter of the cerebellum
deep cerebellar nuclei (DCN)
47
primary vestibular afferents and axons of 2nd order neurons from the vestibular nucleus.
FN lobe and vermis
48
Purkinje cells in the FN lobe mainly project
directly to the vestibular nuclei
49
vermis project to the
fastigial nucleus (most) which serves as a relay to the vestibular nucleus. Vestibulocerebellar System
50
tf body parts are epresented continuously in the cerebllar cortex
body parts are not represented continuouslyin the cerebllar cortex
51
fractured somatotopy
body part is represented in several locations on cerebellar cortexx
58
The cerebellum is attached to the brainstem by -- pairs of ----- bundles comprised of --- and ---- axons ----- the cerebellum
The cerebellum is attached to the brainstem by 3 pairs of fiber bundles comprised of afferent and efferent axons to/from the cerebellum
59
63
These regions are involved in processing vestibular information
Vestibulocerebellum
64
These regions are involved in processing cerebral cortical inputs
Cerebrocerebellum
65
These regions are involved in processing proprioceptive inputs
Spinocerebellum
66
lateral hemisphere and dentate nucleus
Cerebrocerebellum
67
flocculonodular lobe, fastigial nucleus vermis
Vestibulocerebellum
68
vermis, paravermis globose and emboliform nuclei
Spinocerebellum
69
maintaining equilibrium, posture and head position
Vestibulocerebellar System
70
uses vestibulospinal tracts
Vestibulocerebellar System
74
primary vestibular afferents and axons of 2nd order neurons from the vestibular nucleus.
go thru Inferior cerebellar peduncle
75
Vestibulocerebellar System Assists in coordinating eye movements with head movements via
connections with the motor nuclei of CN-III, -IV and -VI
76
coordinating eye movements with head movements of Vestibulocerebellar System
Vestibular apparatus (position of head in space) --\> vestibular nucleus --\> cerebellum à vestibular nucleus --\> CN III, IV, VI via medial longitudinal fasiculus (MLF)