WikiDoc Resources for Exhalation |
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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]
Exhalation (or expiration) is the movement of air out of the bronchial tubes, through the airways, to the external environment during breathing.
Exhaled air is rich in carbon dioxide, a waste product of cellular respiration during the production of ATP.
Exhalation has a complementary relationship to inhalation; the cycling between these two efforts define respiration.