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Expiration
- ... flow into the lungs. The second phase is expiration. Expiration involves gases leaving the lungs. During inspiration, the ... contract allowing air to enter the lungs. During expiration, the inspiration muscles relax forcing gases to flow ...
- ... the chest on inhalation, and pushing upward in exhalation.
- ... vacuum, which pulls air into the lungs. Upon exhalation, the diaphragm relaxes and returns to its domelike ...
- ... performed by blowing out a match with forceful exhalation of the breath without puckering the lips.
- Muscles of the Trunk (National Cancer Institute)Anatomy/Images ... Anatomy ... National Cancer Institute ... From the National Institutes of Health