The seven major divisions of the CNS

4 important questions on The seven major divisions of the CNS

What are the functions of the midbrain?

Role in motor control: linkages between cerebellum, basal ganglia and cortex

components of visual and auditory systems

major pathway for control of eye movements

What are the two dopaminergic projection pathways?

1. Nigrostriatal system: motor control -> parkinson's
2. Mesolimbic system: addiction/reward behaviors -> Schizofrenia

What are the two ascending tracts?

Medial lemniscal tract and spinothalamic tract

bottom-up control

somatosensory info from periphery to CNS
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What are the two descending tracts?

Corticospinal tract and extrapyrimidal tract

top-down control

motor output from CNS to periphery

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