Question

When a bright light is shone into the eye, the diameter of the pupil decreases.
What is this an example of?

Answer 1

ANSWER: In bright light, the circular muscles contract whilst the radial muscles relax. This causes the pupil to constrict and less light enters the eye. In dim conditions the opposite occurs. The circular muscles relax and the radial muscles contract, causing the pupil to dilate and allowing more light to pass into the eye.

Answer 2

Answer:

accommodation

Explanation:

the pupil adjusts to the lighting.