Answer
Air is sucked into the body when one inhales, which increases the size of lungs, hence providing more surface area for gas exchange. When we exhale, lungs are compressed which forces the air out of the body.
Work Step by Step
As above
Biology 2010 Student Edition
by Miller, Kenneth R.; Levine, Joseph S.
Published by
Prentice Hall
ISBN 10:
9780133669510
ISBN 13:
978-0-13366-951-0
Chapter 33, Circulatory and Respiratory Systems - 33.3 - The Respiratory System - 33.3 Assessment - Page 969: 3a
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