The statement "It controls the diameter of the pupil" is
A) true only for the parasympathetic nervous system.
B) true only for the sympathetic nervous system.
C) true for both the parasympathetic and sympathetic nervous systems.
D) not true for either the parasympathetic or sympathetic nervous systems.
E) true only for the somatic nervous system.

Question

Quizplus · Accepted Answer

Both the parasympathetic and sympathetic nervous systems control the diameter of the pupil. The parasympathetic nervous system causes constriction of the pupil (miosis) while the sympathetic nervous system causes dilation of the pupil (mydriasis).

The Statement "It Controls the Diameter of the Pupil" Is