Write the numbers 1 to 5 next to these sentences to show the correct sequence of
events when we breathe out.
The volume inside the chest decreases ________
Air is forces out of the lungs_____
The intercostal muscles relax_____
The ribs move down and in_______
The diaphragm relaxes_____
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The volume inside the chest decreases ____3____
Air is forces out of the lungs__1___
The intercostal muscles relax__4___
The ribs move down and in___2____
The diaphragm relaxes__5___
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