Parkinson’s disease motor symptoms are most commonly associated with
A. an excessive amount of dopamine in motor pathways.
B. loss of dopamine as it travels along motor pathways.
C. overproduction of dopamine in the substantia nigra.
D. a depleted amount of dopamine in the substantia nigra.
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A major function of the somatic nervous system is to
A. carry neural messages between the CNS and internal organs and glands.
B. maintain the body’s internal states.
C. carry motor messages to the CNS.
D. transmit information from sensory receptors to the CNS.
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