Exhalation

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.

• Exhalation at the US National Library of Medicine Medical Subject Headings (MeSH)
• Template:EMedicineDictionary
• Essentials of Human Physiology by Thomas M. Nosek. Section 4/4ch2/s4ch2_14.

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