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Neuroanatomy > Cerebellum - Part 1 > Flashcards

Cerebellum - Part 1 Flashcards

1
Q

Other term for Cerebellum

A

Little brain

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2
Q

Situated in the posterior cranial fossa

• Ovoid in shape and constricted in the median part

A

Cerebellum

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3
Q

dura mater fold dividing the

tentorial surface of cerebrum and the cerebellum

A

Tentorium cerebelli

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4
Q

Folds of cerebellum

A

Folia

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5
Q

Cerebellum is connected to the:
Midbrain by the ?
Pons by the ?
Medulla oblongata by the ?

A

Superior cerebellar peduncle
Middle cerebellar peduncle
Inferior cerebellar peduncle

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6
Q

T or F. Cerebellum has NO DIRECT PATHWAY to the lower
motor neurons but exerts its control via the cerebral
cortex and the brainstem

A

T

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7
Q

Major lobes of Cerebellum

A

Anterior
Middle/Posterior
Flocculonodular

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8
Q

Superior lobe

A

Anterior

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9
Q

Anterior lobe separated from the middle lobe by a wide V-shaped fissure

A

Primary fissure

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10
Q

Largest lobe

A

Middle/Posterior

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11
Q

2 fissures of middle lobe

A

primary fissure and uvulonodular/posterolateral fissure

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12
Q

o Largest and deepest

o Divides cerebellum into upper and lower halves

A

Horizantal sulcus

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13
Q

Lobe posterior to uvulonodular fissure

A

Flocculonodular

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14
Q

Upper surface of the cerebellum is elevated above the

level of the hemispheres

A

Vermis

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15
Q

Vermis deep depression which lodges the posterior part of

medulla oblongata

A

Vallecula cerebelli

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16
Q

Subdivisions of superior vermis

A

Lingula
Lobulus centralis
Monticulus (Culmen and Declive)
Folium vermis

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17
Q

Buried in the vallecular

A

Inferior vermis

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18
Q

Inferior vermis is separated from the hemisphere on either side by a deep groove

A

Sulcus valleculae

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19
Q

Subdivisions of inferior vermis

A

Nodule
Uvula
Pyramid
Tuber vermis

20
Q

o Separates the hemispheres below and behind

o Contains the upper part of the falx cerebri

A

Posterior cerebellar notch

21
Q

o Separates the hemispheres anteriorly
o Shallower than the posterior cerebellar notch
o Lies close to the pons and upper part of the
medulla
o Superior edge encircles the inferior colliculi and
the superior cerebellar peduncle

A

Anterior cerebellar notch

22
Q 
Hemispheric counterparts:
Lingula
Lobulus Centralis
Culmen
Declive
Folium
A 
None
Alae
Lobulus culminis
Lobus clivi
Superior semilunar lobules
23
Q

Folium + superior semilunar lobules

A

lobus semilunaris

24
Q 
Hemispheric counterparts:
Nodule
Uvula
Pyramid
Tuber vermis
A

Flocculus
Tonsils
Biventral lobules
Inferior semilunar lobules

25
Q

Tuber + inferior semilunar lobules

A

lobus tuberus

26
Q

gross movement of the head and body

A

paleocerebellum

27
Q

fine voluntary movements

A

Neocerebellum

28
Q

Vestibular functions

A

Archicerebellum

29
Q
  • Large sheets with folds in coronal or transverse plane

* Outer layer of gray matter

30
Q

Inner layer of white matter

31
Q

small amount of white matter

32
Q

large amount of white matter

A

hemispheres

33
Q

masses of gray matter embedded

in the white matter

A

Intracerebellar nuclei

34
Q

3 layers of cortex

A

Molecular
Purkinje
Granular

35
Q

o Branched appearance: “tree of life”
o White matter of vermis
o Seen when a section is made through the
cerebellum parallel with the median plane by
dividing the folia into right angles

A

Arbor vitae

36
Q

Outermost layer of cortex

A

Molecular layer

37
Q

2 types of neurons in molecular layer

A

stellate and basket cell

38
Q

Middle layer of cortex

39
Q

o Golgi type I neurons
o Multipolar with long axons
o Flask-shaped
o Arranged in a single layer

A

Purkinje cells

40
Q

form synaptic
connections with parallel fibers of granule cell
axons

A

dendritic spines of purkinje

41
Q

Seen at the base of the Purkinje cell and terminates by synapsing with cells of one of the intracerebellar nuclei

A

axons of purkinje

42
Q

Cortex layer packed with small cells with densely staining nuclei and
scanty cytoplasm

A

Granular layer

43
Q

Cells of granular layer

A

granule cells

Golgi cells

44
Q

o 4-5 dendrites – make clawlike endings and
have synaptic contact with mossy fibers
o Axon passes through Purkinje cell layer into
molecular layer where it bifurcates at a Tjunction

A

Granule cells

45
Q

run at right angles to the
dendritic processes of Purkinje cells

Most make synaptic contacts with the
spinous processes of the dendrites of
Purkinje cells

A

Parallel fibers of granule cells

46
Q

o scattered throughout the layer
o Dendrites projects to the molecular layer, and
their axons terminate by splitting up into
branches that synapse with the dendrites of the
granule cells

A

Golgi cells

Neuroanatomy (9 decks)

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