General, Organic, and Biological Chemistry: Structures of Life (5th Edition)

Published by Pearson
ISBN 10: 0321967461
ISBN 13: 978-0-32196-746-6

Chapter 8 - Gases - 8.2 Pressure and Volume (Boyle's Law) - Questions and Problems - Page 297: 8.9

Answer

When divers ascend to the surface, the external pressure upon their body decreases. If the air in the lungs were not expelled through an exhalation, the volume of the air in the lungs would expand, damaging the organs. Therefore, the pressure in the lungs must adjust as external pressure changes.

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