Biology 2010 Student Edition

Published by Prentice Hall
ISBN 10: 9780133669510
ISBN 13: 978-0-13366-951-0

Chapter 31, Nervous System - Standardized Test Prep - Page 919: 8



Work Step by Step

Option A is incorrect. The cornea is the clear front portion of the eye. This layer covers the iris and the pupil and is responsible for partially bending light rays entering the eye. Option B is incorrect. The iris of the eye is made of muscles and surrounds the pupil of the eye. The muscles of the iris control how much light comes into the eye. Option D is incorrect. The optic nerve transmits information from the eyes to the brain. Option C is correct. The retina is the layer in the back inner portion of the eyeball where an image is focused. This layer consists of the receptor cells called rods and cones.
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