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III. Underlying mechanisms Basic studies of movement have identified 3 systems involved in motor control:

  • 1)

    __________________________

  • 2)

    ____________________

  • 3)

    _____________________________

Parkinsonism imply a disorder of the

_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

.

Components and function of extrapyramidal motor system:

The extrapyramidal circuit the final motor program from __________ motor cortex (provided by the pyramidal system) to muscles.

Anatomical components:

Basal Ganglia:

  • a.

    _______________

  • b.

    _________

  • c.

    ______________

d.

e.

_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

I n p u t t o b a s a l g a n g l i a : _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

Output of basal ganglia:

_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ .

_______________________________________________

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