what happens to the muscle of the diaphragm the external intercostal muscles and the position of diaphragm during inhalation and exhalation
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During inspiration, the diaphragm and external intercostal muscles contract, causing the rib cage to expand and move outward, and expanding the thoracic cavity and lung volume. During expiration, the diaphragm and intercostals relax, causing the thorax and lungs to recoil.
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