Human Biology, 14 Edition

Published by McGraw-Hill Education
ISBN 10: 1-25924-574-8
ISBN 13: 978-1-25924-574-9

Chapter 9 - Assess - Page 194: 3



Work Step by Step

In the mouth where food enters, the teeth start breaking down food mechanically by tearing and grinding them into smaller pieces. Chemical digestion also occurs in the mouth where salivary amylase, secreted by the salivary glands of the mouth, start breaking down starch.
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