Stock Photo - illustration of the principle of inhalation (left) and exhalation (right). the diaphragm and intercostal muscles bring about inhalation by increasing the volume of the rib cage, allowing the lungs to fill with air, and diminish the volume of the rib cage during exhalation, expelling air from the lungs.

Stock Photo: illustration of the principle of inhalation (left) and exhalation (right). the diaphragm and intercostal muscles bring about inhalation by increasing the volume.

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