1. Illustration of the actions of contraction of the intercostal muscles, abdominal muscles, and accessory muscles. (Reprinted with permission of the publisher from Weibel ER. The Pathway for Oxygen. Cambridge, MA: Harvard University Press; 1984:304. Copyright © 1984 by the President and Fellows of Harvard College.)
Source: Chapter 2. Mechanics of Breathing, Pulmonary Physiology, 8e
Citation: Levitzky MG. Pulmonary Physiology, 8e; 2013 Available at: Accessed: October 30, 2017
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