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[OS 202] Lecture Exam A > Cerebellum > Flashcards

Cerebellum Flashcards

1
Q

How many microscopic layers does the cerebellum have?

What are they?

A

3

Purkinje
Molecular
Granular

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2
Q

What are the 2 Inhibitory Interneurons?

A

Stellate Cell

Basket Cell

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3
Q

How many neuron types are found in the Purkinje layer?

A

One

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4
Q

Where do the purkinje neurons receive input from?

A

Contralateral inferior olivary nucleus via climbing fibers

[Climb the other Olive Tree]

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5
Q

What are the most numerous neurons?

A

Granule Cells (60-80 Billion)

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6
Q

Where do Granule cells receive inputs from?

A

Mossy fibers from the pontine nucle

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7
Q

How many Cerebellar Nuclei are there?

What are their names?

A

4

Dentate
Emboliform
Globose
Fastigial

[Don’t Eat Greasy Food: From lateral to midline]

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8
Q

All fibers to and from the cerebellum pass through the deep nuclei, except for?

A

Fibers from the flocculonodular lobe which synapse directly on the vestibular nuclei

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9
Q

[Cerebellar Input/Output]

Inferior Cerebellar Peduncle

Alternate name and Input/Output?

A

Restiform body

From Spinal Cord and Lower Brainstem

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10
Q

[Cerebellar Input/Output]

Middle Cerebellar Peduncle

Alternate name and Input/Output?

A

Brachium Pontis

Major afferent fibers from cerebrum and pons

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11
Q

[Cerebellar Input/Output]

Superior Cerebellar Peduncle

Alternate name and Input/Output?

A

Brachium Conjunctivum

Mostly efferent to the thalamus and spinal cord

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12
Q

[Cerebellar Input/Output]

Inferior Cerebellar Peduncle
What tracts are used?

A
  1. Dorsal Spinocerebellar Tract
  2. Climbing Fibers from Contralateral Inferior Olivary Nuclei
  3. Fibers from Purkinje cells -> Vestibular Nuclei
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13
Q

[Cerebellar Input/Output]

Middle Cerebellar Peduncle
What tracts are used?

A

Corticopontocerebellar Tract

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14
Q

[Cerebellar Input/Output]

Superior Cerebellar Peduncle
What tracts are used?

A

Dentatorubrothalamocortical Tract

Cerebellothalamocortical Tract

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15
Q

Cerebellum contains _% of Neurons and _% of Total Brain Volume?

A

50% Neurons

10% TBV

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16
Q

Cerebellum developed from?

A

Rhombomeres

17
Q

Cerebellum receives how many input fibers?

A

About 200 million

18
Q

Other name of Archicerebellum?

Components?

A

Vestibulocerebellum

Flocculonodular Lobe and Adjacent Vermis

19
Q

Other name of Paleocerebellum?

Components?

A

Spinocerebellum

Vermis and intermediate parts of the cerebellar hemisphere

20
Q

Brachium Conjunctivum is mainly afferent/efferent?

Where does it send inputs to? What’s the pathway?

A

Efferent

Sends inputs to the thalamus and spinal cord

Denate Nucleus -> Midbrain -> Thalamus

21
Q

Function: Flocculusnodulus

A

Coordinating eyeball with neck and trunk

[OS 202] Lecture Exam A (14 decks)

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