cerebellum Flashcards Preview

Neuro exam 3 > cerebellum > Flashcards

Flashcards in cerebellum Deck (18):
1

spinocerellum/paleocerebellum is made up of

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

2

paravermal zone

1. connection through the interposed nuclei
2. fine tune limb movements

3

vermal zone

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

4

Corticocerebellum/ neocerebellum

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

5

vestibulocerebellum is made of

floculonodular lobe

6

vestibulocerebellum is connected to

vestibular nucleus of the medulla

7

Cerebellum is attached to BS via

1. ICP
2. MCP
3. SCP

8

ICP carries

Carry major inputs to cerebellum

9

MCP carries

Carry major inputs to cerebellum

10

SCP carries

Carry major outputs to cerebellum

11

cerebellar efferent connections

mostly via deep nuclei of cerebellum
1. vermal cerebellum
2. paravermal
3. lateral

12

Vermal cerebellar efferent

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

paravermal cerebellar efferent

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

14

lateral cerebellar efferent

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

afferent cerebellar connections

1. floculonodular lobe
2. vermal and paravermal zones
3. lateral

16

floculonodular lob afferents

vestibular input

17

vermal and paravermal afferent

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

18

lateral cerebellar afferents

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