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Anatomy 201 > Cerebellum > Flashcards

Cerebellum Flashcards

1
Q

The cerebellum is the largest part of the …

A

the cerebellum is the largest part of the hindbrain

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2
Q

what does the cerebellum occupy most of?

A

the cerebellum occupies most of posterior cranial fossa

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3
Q

what separates the cerebellum from the occipital lobes[of cerebellum?

A

the tentorium cerebelli separates the cerebellum from the occipital lobes of cerebral hemispheres

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4
Q

what does the cerebellum lie dorsal to?

A

the cerebellum lies dorsal to the pons and medulla

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5
Q

what separates the cerebellum from the pons and medulla?

A

the 4th ventricle separates the cerebellum from the pons and medulla

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6
Q

what joins the cerebellum to the brain stem?

A

the 3 bilaterally paired cerebellar peduncles

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7
Q

what do these 3 bilaterally paired cerebellar peduncles contain?

A

all the efferent and afferent fibres associated with the cerebellum

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8
Q

what does the cerebellum consist of?

A

the cerebellum Consists of two cerebellar hemispheres connected to each other through median
vermis

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9
Q

list the 2 surfaces of the cerebellum.

A

cerebellum surfaces :

  1. superior
  2. inferior
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10
Q

describe the superior surface of the cerebellum.

A

the superior surface of the cerebellum is convex

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11
Q

what does the inferior surface[of the cerebellum] show that separates the right and left hemispheres?

A

The Inferior surface shows a deep median notch – vallecula – separates right & left
hemispheres

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12
Q

what is the anterior aspect of cerebellum marked by?

A

The Anterior aspect of the cerebellum is marked by a deep notch- occupied by pons &
medulla

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13
Q

CEREBELLUM - Posteriorly. what is the narrow deep notch occupied by?

A

The narrow deep notch occupied by falx cerebelli

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14
Q

list the 3 lobes that each hemisphere[of the cerebellum] is divided into?

A

anterior lobe
posterior[middle] lobe
flocculonodular lobe

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15
Q

where does the anterior lobe lie on?

A

the anterior lobe Lies on anterior part of superior surface

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16
Q

what separates the anterior lobe from the middle lobe?

A

the anterior lobe is separated from the middle lobe by the primary fissure

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17
Q

name the largest lobe of the cerebellum.

A

Posterior (Middle) Lobe

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18
Q

what limits the posterior(middle) lobe in front on the superior surface?

A

the primary fissure limits the posterior(middle) lobe on the superior surface

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19
Q

what limits the posterior(middle) lobe in front on the inferior surface?

A

the posterolateral fissure limits the posterior(middle) lobe on the inferior surface

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20
Q

name the smallest lobe of the cerebellum.

A

Flocculonodular Lobe

21
Q

what does the Flocculonodular Lobe lie on?

A

the Flocculonodular Lobe on the interior surface in front of the posterolateral fissure

22
Q

what is the cerebellum divided into?

A

the cerebellum is Divided into numerous small parts by fissures

23
Q

what does each fissure cut?

A

Each fissure cuts the vermis & both hemispheres

24
Q

what separates the superior and inferior surface?

A

the horizontal fissure separates the superior and inferior surface

25
Q

what separates the anterior surface from the middle lobe on the superior surface?

A

the PRIMARY FISSURE separates the anterior lobe from the middle lobe on the superior surface

26
Q

what separates the middle[ posterior lobe from the flocculonodular lobe on inferior surface?

A

the POSTEROLATERAL FISSURE separates the middle[posterior lobe] from the flocculonodular lobe on inferior surface

27
Q

List the parts of the vermis (inferiorly)

A

Tuber
Pyramid
Uvula
Nodule

28
Q

List the subdivisions of the cerebellar hemispheres (superiorly)

A
  • Simple lobule superior
  • Superior semilunar lobule
  • Inferior semilunar lobule
29
Q

List the subdivisions of the cerebellar hemispheres (inferiorly)

A
  • Ala
  • Quadrangular lobule
  • Biventral lobule
  • Tonsil
  • Flocculus
30
Q

List the morphological and functional divisions.

A

Archiocerebellum
Paleocerebellum
Neocerebellum

31
Q

What is the archicerebellum made up of?

A

The archicerebellum is made up of flocculonodular lobe and lingula

32
Q

What does the archicerebellum control?

A

The archicerebellum controls axial musculature and bilateral movements

33
Q

What is the axial musculature and bilateral movements used for?

A

The axial musculature and bilateral movements are used for locomotion and maintenance of equilibrium

34
Q

The archicerebellum is chiefly…

A

The archicerebellum is chiefly vestibular in its

connections

35
Q

What is the paleocerebellum made up of?

A

The paleocerebellum is made up of the anterior lobe , pyramid , uvula

36
Q

The connections of the paleocerebellum are chiefly..

A

The connections of the paleocerebellum are chiefly spinocerebellar

37
Q

What does the paleocerebellum control?

A

The paleocerebellum controls the tone , posture and crude movements of the limbs

38
Q

What is the neocerebellum made up of?

A

The neocerebellum is made up of the middle lobe(largest part of the cerebellum) minus the pyramid and uvula of inferior vermis

39
Q

The neocerebellum is chiefly … in its connections

A

Cortico - cerebellar

40
Q

What is the neocerebellum concerned with?

A

The neocerebellum is concerned with the regulation of fine movements

41
Q

How are 3 peduncles formed?

A

The fibres entering or leaving the cerebellum are grouped to form 3 peduncles

42
Q

What do those 3 peduncles connect the cerebellum to?

A

Those 3 peduncles connect the cerebellum to the mid brain , pons and medulla

43
Q

What does the grey matter of the cerebellum consist of?

A

The grey matter of the cerebellum consists of cerebellar cortex and cerebellar nuclei

44
Q

List the 4 pairs of nuclei

A
  • Dentate nucleus
  • Globose nucleus
  • Emboliform nucleus
  • Nucleus fastigii
45
Q

What does the cerebellum control?

A

The cerebellum controls the same side of the body (I.e. the influence is ipsilateral.

46
Q

What is chiefly done by the neocerebellum

A

The coordination of voluntary movements (so that they are smooth , balanced and accurate) is chiefly done by the neocerebellum

47
Q

What does dysfunction give rise to?

A

Dysfunction gives rise to incoordination of movements

48
Q

What is chiefly done by the archicerebellum and paleocerebellum?

A

The control of tone , posture and equilibrium

49
Q

What do the cerebellar lesions give rise to

A

Cerebellar lesions give rise to hypotonia and disturbances of equilibrium

Anatomy 201 (12 decks)

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