Concept
Version 8
Created by Boundless
The Mechanics of Human Breathing
Inhalation and exhalation
The lungs, chest wall, and diaphragm are all involved in respiration, both (a) inhalation and (b) expiration.
Source
Boundless vets and curates high-quality, openly licensed content from around the Internet. This particular resource used the following sources:
"OpenStax College, Breathing. October 17, 2013."
http://cnx.org/content/m44797/latest/Figure_39_03_03.jpg
OpenStax CNX
CC BY 3.0.