Parkinson Disease Is the Result of

Multiple Choice

Parkinson disease is the result of

A) inadequate production of GABA by neurons in the basal nuclei.
B) decreased levels of acetylcholine from neurons in the substantia nigra.
C) inadequate production of dopamine by substantia nigra neurons.
D) hyperactivity of the limbic system.
E) weak response of the red nuclei of the midbrain.