Which of the following is true about the role of the autonomic nervous system in sexual behavior in males?
A. Small amounts of dopamine stimulate D2 receptors to activate the parasympathetic nervous system.
B. Stimulation of D1 receptors activates the parasympathetic nervous system, which increases motivation and erection.
C. Serotonin effects on the autonomic nervous system are responsible for the shift from sympathetic to parasympathetic activity.
D. Serotonin stimulates the sympathetic nervous system, causing ejaculation.
Answer: B
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