Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

From Flashcardlet > Neuro 64: Cerebellum > Flashcards

Neuro 64: Cerebellum Flashcards

1
Q

What are the 3 aspects of mvmnt that the cerebellum controls?

A
  1. Planning
  2. Adjusting
  3. Balance/eye mvmnts
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What 2 ways does the cerebellum influence mvmnt?

A
  1. by influencing corticospinal and corticobulbar neurons in the cerebral cortex (UMN)
  2. by influencing the descending brainstem pthwys that project to the spinal cord (UMN) –> NO direct efferent projections from the cerebellum to the sc
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

What are the sx of cerebellar disease?

A
  1. unccordinated mvmnt = ataxia

2. nystagmus

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What is the vermis?

A

-connects the 2 hemispheres of the cerebellum

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Primary fissure

A

-separates the anterior lobe from the posterior lobe of the cerebellum

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Posteriorlateral fissure

A

-separates the posterior lobe from the flocculonodular lobe

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What are the 3 lobes of the cerebellum?

A
  1. anterior
  2. posterior
  3. flocculonodular lobe
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Name the deep nuclei of the cerebellum?

A
  1. Fastigial (the most medial)
  2. Interpositius (made up of 2 pieces)
  3. Dentate (the squiggly one)
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

What do all fibers travel from or going to the cerebellum travel via?

A
  • the peduncles:
    1. inferior
    2. middle
    3. superior
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Folia

A
  • these are like the gyri of the cortex

- look like pages of a book

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Fissures

A

-these are like the sulci of the cortex

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

What are the 4 functional units of the cerebellum?

A
  1. vestibulocerebellum
    2a. spinocerebellum for axial m.
    2b. spinocerebellum for distal m.
  2. cerebrocerebellum
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Vestibulocerebellum: structure, where are inputs from, which deep nuc do they go to?, function?

A
  1. structure = flocculus, nodulus
  2. inputs = vestib nuc & nerve
  3. to deep nuclei = vestibular nuc (not really a deep nucleli)
  4. fx = balance and eye mvmnt
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Axial spinocerebellum: structure, inputs, to, fx

A
  1. structure = vermis
  2. inputs from = spinal cord
  3. to = fastigial deep nuclei
  4. fx = adjust mvmnts of axial m.
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Distal spinocerebellum: structure, inputs, to, fx

A
  1. structure = lateral hemisphere (intermediate zone)
  2. inputs = spinal cord
  3. to = interpositus
  4. fx = adjust mvmnt of distal m.
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Cerebrocerebellum: structure, inputs, to, fx

A
  1. structure = lateral hemisphere
  2. inputs = cerebral cortex via pons
  3. to = dentate nuc
  4. fx = motor planning
17
Q

Sx of a lesion in the flocculus or nodulus? What 2 things can cause these lesions?

A

Vestibular sx:

  1. falling
  2. ataxic/wide-based gait
  3. nystagmus
  4. nausea
  5. vertigo
    - Lesions: 4th ventricle tumor or MS
18
Q

Sx of lesions in vermis? What 3 things can cause these lesions?

A
  • ataxic gait b/c of uncoordinated trunk/proximal lower limb mvmnts
  • lesions: alcohol, MS, tumors
19
Q

Sx of lesion in the hemispheres? What 3 things can cause these lesions?

A
  • limb ataxia

- lesions: MS, tumors, infarcts

20
Q

2 mjr sx of cerebellar lesions?

A
  1. vestibular sx
  2. ataxia
    - trunk = vermis
    - limbs = hemisphere, peduncles, pathways
    * *any damage to the cerebellum will cause deficits on the SAME side of the body!
21
Q

Ataxia

A

lack of coordinated contractions of agnoist and antagonist m.s
-cerebral hemisphere sx

22
Q

Asynergia

A

lack of coordinated contractions of agnoist and antagonist m.s
-cerebral hemisphere sx

23
Q

Dysmetria

A
  • inaccurate mvmnt range or dirrection

- cerebral hemisphere sx

24
Q

Hypermetria

A
  • excessive mvmnt amplitude
  • overshoot
  • cerebral hemisphere sx
25
Q

Hypometria

A
  • insufficient mvmnt amplitude
  • mvmnt falls short
  • cerebral hemisphere sx
26
Q

Dysdiadochokinesia

A
  • inability to perform fine, repetitive mvmnts

- cerebral hemisphere sx

27
Q

Lack of check

A
  • inability to readjust limb position when mvmnt is disturbed
  • cerebral hemisphere sx
28
Q

Dysarthria

A
  • uncoordinated, slurred, or slow speech
  • word use is uneffected!
  • cerebral hemisphere sx
29
Q

What 3 things can cause cerebellar sx?

A

damge to:

  1. cerebellum
  2. its peduncles
  3. CNS pthwys
30
Q

Two clinical tests for limb coordination (cerebellar hemispheres) & what will they show if there is impairment?

A
  1. finger-nose-finger
  2. heel-to-shin
    * *pt will have a tremor or ataxia if there is impairment

From Flashcardlet (79 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions