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

Question

Quizplus · Accepted Answer

Both the parasympathetic and sympathetic nervous systems control the diameter of the pupil; the sympathetic system dilates it, while the parasympathetic system constricts it.

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