Pressure
Published on Nov 18, 2015
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PRESENTATION OUTLINE
When you inhale, a muscle increases the space in you chest and gives your lungs room to expand.
Photo by TheAlieness GiselaGiardino²³
The expansion decreases the pressure in your lungs. The pressure in your lungs becomes lower than the air pressure outside your lungs.
When you exhale,a muscle in your chest moves up-ward and decreases the space in your chest.
Photo by euthman
Exhaled air carries carbon dioxide out of the lungs.
Photo by Pulmonary Pathology
The air in your lungs flows from a region of high pressure(your chest) to a region of low pressure(the outside of your body).
Photo by vituh
