Which of the following changes in the body is NOT caused by stimulation of the human sympathetic nervous system?
A. Increased sweating.
B. Increased heart rate.
C. Constriction of pupils.
D. Increased blood pressure.
Stimulation of the sympathetic nervous system increases the heart rate, sweating, and blood pressure and dilates the pupils of the eyes. Stimulation of the parasympathic nervous system produces opposite effects, that is, decreases the heart rate, sweating and blood pressure, as well as constriction of the pupils.