Essentials of Human Anatomy & Physiology (12th Edition)

Published by Pearson
ISBN 10: 1292216239
ISBN 13: 978-1-29221-623-2

Chapter 14 - The Digestive System and Body Metabolism - Review Questions - Page 535: 26

Answer

The two phases of swallowing are the oral phase and the pharyngeal phase.

Work Step by Step

The oral phase is voluntary, the movement of the bolus from the oral cavity into the oropharynx. The pharyngeal phase is involuntary, movement of the bolus from the oropharynx into the esophagus.
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