Basal Ganglia Week 5 Flashcards

1
Q

what does damage to the motor cortex cause?

A

damage causes paralysis and or spasticity.

motor cortex
- direct motor output = voluntary
- corticospinal tract.

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2
Q

what does damage to the cerebellum cause?

A

damage results on inaccutate or pooly timed movement. (ataxia)

moduates movement accuracy
Receives afferent information from spinal cord.
projects to sensorimotor areas of cortex

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3
Q

what does damage to the basal ganglia cause?

A

damage results in problems initiating and terminating movement.

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4
Q

does the basal ganglia have direct connections to the spinal cord.

A

no direct connections to spinal cord

  • strategic aspects of movement
  • reciprocal connections to almost all areas of cerebral cortex.
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5
Q

what are basal ganglia connections?

A

widespread reciprocal connections to cerebral cortex ( via thalamus)
- not just involved in movement
- behaviour and emotion

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6
Q

what are cerebellum connection

A

connections only to sensorimotor areas of cerebral cortex via thalamus

  • receives inout from brainstem and spinal cord
  • involved almost exclusively with movement.
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7
Q

what are the basla gangia collection of 5 nuclei

A

1)caudate
2) putamen
3) globus pallidus
- internal (GPi)
- External (GPe)
4) substantia nucleus (STN)
5)Substrantia nigra
- pars compacta (SNc)
- Pars reticulate (SNr)

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8
Q

What are the causdate and putamen part of?

A

Caudate and putamen are part of the stratum.

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9
Q

What are the gross anatomy : inputs

A

inputs
- striatum (caudate and putamen)
- reveives direct amd indirect via thalamus connections from cerebral cortex.

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