alleryPARKINSON'S DISEASE is caused primarily by:
AExcess serotonin in the brain
BDeficiency of dopamine in substantia nigra
CAutoimmune attack on myelin sheaths
Dβ-amyloid plaque buildup in cortex
Answer & Solution
Correct answer: B. Deficiency of dopamine in substantia nigra
**PARKINSON'S:** degeneration of dopaminergic neurons in the SUBSTANTIA NIGRA
→ dopamine deficiency
→ tremors, rigidity, slow movement.
**Treatment:** L-DOPA (precursor of dopamine). Alzheimer's: β-amyloid.
**MS:** autoimmune attack on myelin.
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