Answer
The mucus from pharyngotympanic tubes and the sinuses contains several harmful pathogens which can causes several diseases. The nasopharynx contains several tonsils which trap and destroy these pathogens.
Work Step by Step
Same as above.
Essentials of Human Anatomy & Physiology (12th Edition)
by Marieb, Elaine N.; Hoehn, Katja N.
Published by
Pearson
ISBN 10:
1292216239
ISBN 13:
978-1-29221-623-2
Chapter 13 - The Respiratory System - Review Questions - Page 488: 13
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