Why is swallowing dominant to respiration in normal individuals?

Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
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Why is swallowing dominant to respiration in normal individuals?

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Step 1 Brief note on Swallowing and respiration:

The pathways for the air and food cross in the pharynx. In breathing, the air may flow through either the nose or the mouth, it always flows through the pharynx. During swallowing the pharynx changes from an airway to a food channel. During mastication, the food bolus accumulates in the pharynx prior to swallow initiation. Therefore a proper tuning of feeding among breathing, mastication and swallowing is essential to provide proper food nutrition and to prevent pulmonary aspiration.

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