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 by contracting and relaxing its circular and radial muscles. The ora serrata is the boundary between the ciliary muscle and retina, the suspensory ligament connects the ciliary muscle to the lens, the cornea is the clear outer covering of the eye, and the anterior chamber is a fluid-filled area between the cornea and iris.

The Structure That Functions as a Diaphragm to Control Pupil