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ANAT 516 > Cerebellum > Flashcards

Cerebellum Flashcards

1
Q

Which view of cerebellum?

A

Posterior

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2
Q

Which view of cerebellum?

A

Anterior

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3
Q

Which view of the cerebellum?

A

Right (inferior); left (superior)

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4
Q

What dural extension separates the cerebellum from the inferior occipital lobe?

A

Tentorium cerebelli

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5
Q

Which ventricle is located between the pons and cerebellum?

A

4th

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6
Q

Where is the flocculus

A

It “flocks” the peduncles; visible on anterior surface just below the middle CP

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7
Q

On which surface is the paravermis visible?

A

Superior

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8
Q

Which lobe of cerebellum is largest?

A

Posterior

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9
Q

Which two regions make up the vestibulocerebellum

A

Flocculus and nodule

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10
Q

Which region represents the cerebrocerebellum?

A

Most of posterior lobe

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11
Q

Which structures make up the spinocerebellum?

A

1) Vermis 2)Paravermis 3)Anterior lobe

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12
Q

What are the two afferents to the SUPERIOR cerebellar peduncle?

A

1) Anterior spinocerebellar tract; 2) Acoustic and optic information

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13
Q

What are the two EFFERENTS of the SUPERIOR cerebellar peduncle?

A

1) Dentatorubrothalamic tract; Dentatothalamic tract

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14
Q

What afferent tract travels via the middle cerebellar peduncle (hint: why is the MCP the biggest peduncle?)

A

Pontocerebellar tract

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15
Q

Middle cerebellar efferents?

A

None!

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16
Q

Inferior cerebellar peduncle afferents

A

Vestibulocerebellar tract; olivocerebellar tract; posterior spinocerebellar tract

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17
Q

ICP efferents

A

Cerebello-vestibular tract; cerebello-olivary tract

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18
Q

Which cerebellar nucleus is involved in the vestibulocerebellar loop?

A

Fastigial

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19
Q

Which cerebellar lobe do projections from the pontine nuclei terminate in?

A

Posterior lobe (contralateral)

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20
Q

Which artery supplies the cerebellar peduncles?

A

AICA

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21
Q

Which artery supplies the flocculonodular lobe?

A

AICA

22
Q

Which arteries supply the posterior lobe?

A

PICAs and SCA

23
Q

Which artery supplies the tonsils?

A

PICAs

24
Q

Which artery supplies the anterior lobe?

A

SCA

25
Q

Which arteries supply the vermis

A

PICAs (inferior) and SCA (superior)

26
Q

Which arteries supply the deep cerebellar nuclei

A

Mostly SCA with help from AICAs

27
Q

Lesions to the cerebellum result in

A

Truncal instability or IPSILATERAL limb deficits

28
Q

What are the 4 deep nuclei from lateral to medial? (don’t eat greasy food)

A

1) Dentate 2) Emboliform 3)Globose 4)Fastigial

29
Q

Which cerebellar region and nucleus are responsible for truncal movements

A

Vermis + fastigial nucleus

30
Q

Which region (spinocerebellum) is associated with truncal movements

A

Anterior lobe; efferents via globose and emboliform nuclie

31
Q

How many time does motor-coordination (limb adjustment) information cross the midline?

A

Twice; 1 from cerebellum to motor cortex, one at decussation of pyramids

32
Q

Which cerebellar functional system is involved in the learning of new skills?

A

Neocerebellum/Cerebrocerebellum

33
Q

Which 4 spinal tracts provide information to the cerebellum?

A

1) Posterior spinocerebellar (lower limb), 2) Cuneocerebellar (upper limb); 3) anterior spinocerebellar (lower limb); 4) rostral spinocerebellar (upperlimb)

34
Q

Which spinocerebellar tract involves Clarke’s nucleus?

A

Posterior

35
Q

What levels of the SC does Clarke’s nucleus extend over?

A

L3 to C8 – fibres below L3 travel in the fasciculus gracilis until they reach L3 and synapse in Clarke’s nucleus

36
Q

Where do posterior spinocerebellar fibres enter the ICP?

A

Rostral medulla

37
Q

Where do fibres in the posterior spinocerebellar tract cross the midline?

A

They don’t! Info to cerebellum remains IPSI always

38
Q

Which fibre types send afferents to Clarke’s nucleus?

A

Ia, Ib, and II (GTO) fibres

39
Q

Which types of information travel in the fasciculus cuneatus until the rostral medulla

A

Sensory AND proprioceptive information (cuneocerebellar tract does not branch off until reaching the accessory cuneate nucleus)

40
Q

Where do cuneocerebellar fibres originate

A

Accessory cuneate nucleus (rostral medulla)

41
Q

Where do cuneocerebellar fibres enter the cerebellum

A

ICP

42
Q

Which spinocerebellar tracts involve SBCs?

A

1) anterior spinocerebellar tract; 2) rostral spinocerebellar tract

43
Q

Where is the first synapse in the anterior spinocerebellar tract?

A

SBCs in the anterolateral border of the SC white matter

44
Q

How many times does the anterior spinocerebellar tract cross the midline

A

Twice

45
Q

How do fibres from anterior spinocerebellar tract enter the cerebellum

A

Via the SCP

46
Q

Where is the first synapse for the rostral spinocerebellar tract?

A

SBCs in anterolateral white matter of anterior horn (also receive descending inputs)

47
Q

Where do rostral spinocerebellar fibres cross the midline?

A

They do not! Only the anterior spinocerebellar tract does

48
Q

Proprioceptive and cutaneous information above T8 travels in which tract to the cerebellum

A

Rostral spinocerebllar

49
Q

Proprioceptive and cutaneous information below T8 travels in which tract to the cerebellum

A

Anterior spinocerebellar

50
Q

Where do rostral spinocerebellar tract fibres enter the cerebellum

A

SCP

51
Q
A

ANAT 516 (12 decks)

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