neuroanatomy - Cerebellum Flashcards

1
Q

what is the function of the cerebellum?

A

coordination, precision and timing of movements as well as motor learning

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2
Q

the anterior portion of the neural tube forms three parts?

A

forebrain, midbrain and hindbrain

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3
Q

the forebrain is from the?

A

prosencephalon

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4
Q

the midbrain is from the?

A

mesencephalon

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5
Q

the hindbrain is from the?

A

rhombencephalon

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6
Q

the hindbrain subsequently divides into the?

A

metencephalon (superior) and the myelencephalon (inferior0

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7
Q

the location of the cerebellum is? (3)

A

it is located at the back of the brain, immediately inferior to the occipital and temporal lobes and within the posterior cranial fossa

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8
Q

the tentorium cerebella is a?

A

tough layer of dura mater

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9
Q

what separates the pons and the cerebellum?

A

the 4th ventricle

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10
Q

what is the at the same level and posterior to the pons?

A

cerebellum

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11
Q

what connects the two hemispheres of the cerebellum?

A

vermis

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12
Q

the grey matter part of the cerebellum is called the?

A

cerebellar cortex

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13
Q

what is located underneath the cerebellar cortex?

A

white matter

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14
Q

what are the four cerebellar nuclei?

A

the dentate, emboliform, globose and fastigi nuclei

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15
Q

there are three anatomical lobes in the cerebellum (3)

A

anterior, posterior and flocculonodular

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16
Q

what are the two fissures that divide the three lobes of the cerebellum?

A

primary fissure and posterolateral fissure

17
Q

there are three cerebellar zones

A

vermis
intermediate zone
lateral zone

18
Q

where is the vermis located?

A

in the midline of the cerebellum

19
Q

where is the intermediate zone located?

A

on either side of the vermis

20
Q

where is the lateral zone located?

A

lateral to the intermediate

21
Q

there is no difference in ——- structure between the lateral hemispheres and the intermediate zones

A

gross

22
Q

what are the three functional areas of the cerebellum?

A

cerebrocerebellum
spinocerebellum
vestibulocerebellum

23
Q

what is the largest division of the cerebellum?

A

cerebrocerebellum

24
Q

what is the cerebrocerebellum formed by?

A

the lateral hemispheres

25
Q

what is the function of the cerebrocerebellum? (5)

A

planning movements and motor learning. regulating coordination of muscle activation and is important in visually guided movements.

26
Q

where does the cerebrocerebellum receive input from?

A

cerebral cortex and pontine nuclei

27
Q

where the cerebrocerebellum sent output to?

A

thalamus and red nucleus

28
Q

what does the spinocerebellum comprise of?

A

vermis and intermediate zone of the cerebellar hemispheres

29
Q

what is the function of the spinocerebellum?

A

regulating body movements by allowing for error correction and also receiving proprioceptive information

30
Q

what is the functional equivalent to the flocculonodular lobe?

A

vestibulocerebellum

31
Q

what is the function of the vestibulocerebellum?

A

controlling balance and ocular reflexes, mainly fixation on a target

32
Q

where does the veesstibulocerebellum receive input from?

A

vestibular system

33
Q

where does the vestibulocerebellum send output back to?

A

the vestibular nuclei

34
Q

what are the three paired arteries that supply the cerebellum?

A

superior cerebellar artery
anterior inferior cerebellar artery
posterior inferior cerebellar artery

35
Q

the SCA and AICA are branches of the?

A

basilar artery

36
Q

the SCA and AICA wrap around the anterior aspect of the ——- before reaching the cerebellum

A

pons

37
Q

the PICA is a branch of the

A

vertebral artery

38
Q

the venous drainage of the cerebellum is by the

A

superior and inferior cerebellar veins

39
Q

the superior and inferior cerebellar veins drain into the?

A

superior petrosal, transverse and straight dural venous sinuses