The muscular partition in the eye that expands and contracts to regulate the amount of light admitted is called the
A) iris.
B) lens.
C) pupil.
D) retina.

Question

Quizplus · Accepted Answer

The iris is the muscle in the eye that expands and contracts to adjust the size of the pupil, regulating the amount of light that enters the eye. The lens is a transparent structure in the eye that focuses light onto the retina. The pupil is the opening in the center of the iris through which light enters the eye. The retina is the part of the eye that contains light-sensitive cells that convert light into neural signals sent to the brain.

The Muscular Partition in the Eye That Expands and Contracts