Neuro 53: Motor intro Flashcards

1
Q

What 5 things are involved in mvmnt & what controls them

A
  1. plan - cerebellum
  2. start - basal ganglia
  3. move - UMN & LMN
  4. adjust/coordinate - involves sensory feedback - cerebellum
  5. balance/posture - cerebellum
    * *all happen spontaneously
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2
Q

UMN consist of

A
  1. cortical motor areas
  2. brainstem nuclei
    - deliver messages to the LMN
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3
Q

LMN consist of

A
  1. cranial nerve mn

2. spinal cord mn

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4
Q

How does the cerebellum help coordinate mvmnt? What happens w/ damage

A
  • influences mvmnt through the UMN
  • controls utilization of the correct m. for the task
  • controls sequence of muscle contraction
  • makes adjustments along the way
  • controls balance
  • *damage –> ataxia = uncoordination, falling, vestibular sx
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5
Q

How does the basal ganglia help w/ mvmnt?

A
  • influences mvmnt through the UMN
    1. gets mvmnt started
    2. increases motor cortical activity
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