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PANCE Practice Test

Category - PA

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Parkinson’s disease is a chronic, progressive motor disorder caused by the loss of which of the following?

dopamine from substantia nigra
acetylcholine from the basal ganglia
muscarinic receptors in the muscles
myelenation of the motor nerves

Explanation

Answer: A - Destruction of the dopaminergic neurons in substantia regia reduces the amount of neurotransmitter dopamine.

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