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Flashcards in cerebellum Deck (18)
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1
Q

spinocerellum/paleocerebellum is made up of

A
  1. vermal zone and paravermal cerebellar cortex
  2. paravermal zone
  3. vermal zone
2
Q

paravermal zone

A
  1. connection through the interposed nuclei

2. fine tune limb movements

3
Q

vermal zone

A
  1. efferent connections through the fastigial nucleus
  2. involved in control of axial musculature, posture, balance
  3. integration of head/eye movement
4
Q

Corticocerebellum/ neocerebellum

A
  1. Lateral portions of lobes
  2. connections through dentate nucleus
  3. Involved in higher level movement coordination
  4. Planning and initiating movment
5
Q

vestibulocerebellum is made of

A

floculonodular lobe

6
Q

vestibulocerebellum is connected to

A

vestibular nucleus of the medulla

7
Q

Cerebellum is attached to BS via

A
  1. ICP
  2. MCP
  3. SCP
8
Q

ICP carries

A

Carry major inputs to cerebellum

9
Q

MCP carries

A

Carry major inputs to cerebellum

10
Q

SCP carries

A

Carry major outputs to cerebellum

11
Q

cerebellar efferent connections

A

mostly via deep nuclei of cerebellum

  1. vermal cerebellum
  2. paravermal
  3. lateral
12
Q

Vermal cerebellar efferent

A
  1. Through fastigial nucleus
  2. sends efferent info to the vestibular nucleus and pontine reticular formation
  3. Info descends in medial descending system via the lateral vestibulospinal tract and pontine reticulospinal tract
  4. Some neurons of floculonodular lobe make direct connections with vestibular nucleus without synapsing in fastigial nucleus
  5. Equilibrium and posture control
13
Q

paravermal cerebellar efferent

A
  1. through interposed nuclei
  2. info goes to contralateral red nucleus
  3. motor output directed through rubrospinal tract (part of lateral descending system)
14
Q

lateral cerebellar efferent

A
  1. info send via dentate nucleus
  2. goes to contralateral ventrolateral thalamus
  3. projects to primary motor cortex, associated motor cortex and other elements of cortex
15
Q

afferent cerebellar connections

A
  1. floculonodular lobe
  2. vermal and paravermal zones
  3. lateral
16
Q

floculonodular lob afferents

A

vestibular input

17
Q

vermal and paravermal afferent

A
  1. SC input

2. 2 somatotopic distributions, arranged head to head with axial body more medial and limbs more lateral

18
Q

lateral cerebellar afferents

A
  1. no direct afferents.
  2. cortex projects to pontine nuclei, which projects and ends in lateral zone
  3. contains collateral CST and corticobulbar fibers
  4. cortical input is from contralateral cortex