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How Expiration Works: Anatomy and Physiology of Breathing Out #3715863 (License: Personal Use)

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Illustration showing lung expiration: diaphragm relaxes, thoracic cavity volume decreases, air exits lungs.

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This diagram illustrates the physiological process of expiration: as the diaphragm relaxes and moves upward, the volume of the thoracic cavity decreases, increasing intrapulmonary pressure and forcing air out through the airways. The right-side schematic highlights the negative pressure at the glottis and positive pressure in the alveoli driving airflow outward. Arrows indicate direction of movement and airflow during passive exhalation.
Used in educational medical content (e.g., physiology textbooks, anatomy websites, respiratory therapy resources) to explain normal breathing mechanics; targets students, healthcare trainees, and patients seeking to understand respiration.
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Related Cliparts: Discover the mechanics of expiration-how the diaphragm relaxes, lung volume decreases, and air is expelled. Visual guide for students and clinicians.

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