In the visual system, activation of the parasympathetic nervous system causes which of the following?
A) pupillary constriction and an increase in the refractive power of the lens
B) pupillary constriction and a decrease in the refractive power of the lens
C) pupillary dilation and an increase in the refractive power of the lens
D) pupillary dilation and a decrease in the refractive power of the lens
E) pupillary dilation and no effect on the refractive power of the lens

Question

Quizplus · Accepted Answer

Activation of the parasympathetic nervous system causes pupillary constriction (miosis) and an increase in the refractive power of the lens, preparing the eye for near vision.

In the Visual System, Activation of the Parasympathetic Nervous System