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Neuroscience > Cerebellum > Flashcards

Cerebellum Flashcards

1
Q

What forms the roof of the 4th ventricle??

A

Cerebellum :)

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2
Q

What fissure separates the flocc lobe and posterior lobe?

A

Posterolateral

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3
Q

What is the flocc lob also called?

A

Inferior vermis

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4
Q

What are the three functional divisions?

A

Spinocerebellum
Cerebrocerebellum
Vestibulocerebellum

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5
Q

Location of spinocerebellum,

A

Sup vermis and intermediate zone

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6
Q

Location of cerebrocerebellum

A

Lateral parts of cerebellar hemispheres

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7
Q

Location of vestibulocerebellum

A

Oldest part

-flocc lobe

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8
Q

What are the 4 nuclei in the cerebellum??

A

Dentate, emboliform, globose, fastigial

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9
Q

What is part of the interposed nuclei

A

Emboliform and globose

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10
Q

What artery supplies the 4 deep nuclei?

A

SCA

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11
Q

SCA supplies

A

Superior half of cerebellum, (ant lobe), upper lateral pons, deep nuclei, superior vermis, sup cerebellar peduncle

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12
Q

AICA supplies

A

Anteroinferior surface of cerebellum, flocculus, middle cerebellar peduncle and inferolat portion of pons

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13
Q

PICA supplies

A

Posteroinferior cerebellar hemi (up to great horizontal fissure)

50% lower medulla

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14
Q

Most common site of infarction?

A

PICA and SCA

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15
Q

Fxn of superior cerebellar peduncle

A

Mostly output- efferent from cerebellum

*** contains some afferents (input) to cerebellum: VENTRAL AND ROSTRAL spinocerebellar

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16
Q

Middle peduncle fxn

A

Input to cerebellum
-mostly from base of contralateral pons (cells in pontine nuclei)

*** pontocerebellar axons (input from cx to pons to cerebellum)

17
Q

Inferior cerebellar peduncle receives inputs from where

A

Vestibular nuclei, SC brainstem

most input comes thru here

18
Q

What are the afferents to the inf peduncle

A

Dorsal spinocerebellar (ipsil Clarke’s nuc)
Cuneocerebellar (ipsil lat cuneate)
Olivocerebellar (contralateral inf olivary complex)
rostro
OTHER - vestibular nerve and nuclei

19
Q

Where are the interneurons in the ventral and rostral spinocerebellar tracts??

A

SC

20
Q

Corticopontoccerebellar fibers?

A

They are interspersed for M1, sensory and visual cx

21
Q

Corticopontine fibers onto ____ pons, then pontocerebellar fibers _____ and enter contralateral _______ which gives rise to _____ fibers to almost entire cx.

A

Ipsil, crossover, middle cerebellar peduncle,mossy

22
Q

Outputs are carried by ?

A

Purkinje cells to deep nuc or vestib nuc directly

23
Q

Superior vermis does what

A

Coordination of trunk and prox muscles

Ant corticospinal
Tectospinal

Neuroscience (6 decks)

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