In contrast to the sympathetic nervous system, the functions of the parasympathetic nervous system include:
A) Sweating
B) Anabolism
C) Pupil dilation
D) Vasoconstriction
Ans: B
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In contrast to the sympathetic nervous system, the functions of the parasympathetic nervous system are concerned with conservation of energy, resource replenishment and storage (i.e., anabolism), and maintenance of organ function during periods of minimal activity. The parasympathetic nervous system contracts the pupil, protecting the retina from excessive light during periods when visual function is not vital to survival. Sweating and regulation of arteriolar blood vessel diameter are controlled by a single division of the autonomic nervous system (ANS), in this case the sympathetic nervous system.
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