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13 cards from this deck
Diaphragm & external intercostal muscles
Raise ribs upwards & outwards
Increases
Air rushes into lungs
Internal intercostals
Lower downwards & inwards
Decreases
Air forced out of lungs
Pectorals & sternocleidomastoid
Raise the sternum
Lungs expand further
Abdominal muscles (pull rib cage down quickly)
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