The effects of sympathetic stimulation of the iris are:
A) vasoconstriction
B) relaxation (for far vision)
C) contraction of the circular muscle and pupil constriction
D) contraction of the radial muscle and pupil dilation
D) contraction of the radial muscle and pupil dilation
Effects of sympathetic stimulation on the iris include contraction of the radial muscle and pupil dilation (mydriasis).
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