Use the following information to answer the next question.When a person enters a dark room, the size of the iris___1____. At the same time, the size of the pupil_____2_____.The information in which alternative completes the given statements?
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Answer:
1-widens
2-dilates
Explanation:
To control the amount of light entering the eye, the iris widens or narrows to change the size of the pupil. For example, when it's dark, the iriswidens and the pupil dilates, or gets bigger, to allow as much light as possible to enter the eye.
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