Labels:auditorium | chair | cinema | crt screen | curtain | light | screen | seat | stairs OCR: Inspiration (Breathing In) The diaphragm moves down and becomes flatter The intercostal muscles relax and move out. Air moves into the lungs Expiration (Breathing Out) The diaphragm relaxes The intercostal muscles tighten. Air is pushed out the lungs Exit Brea ithing
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