The structure that functions as a diaphragm to control pupil size is the
A)ora serrata.
B)suspensory ligament.
C)iris.
D)cornea.
E)anterior chamber.

Question

Quizplus · Accepted Answer

The iris is the structure that functions as a diaphragm to control pupil size. The iris contains smooth muscle fibers that can contract or relax to adjust the size of the pupil, which controls how much light enters the eye. The other structures listed, such as the ora serrata and suspensory ligament, do not have a role in controlling pupil size.

The Structure That Functions as a Diaphragm to Control Pupil