Why our air passage doesnot collapse , when we breathe out
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We have cartilage in our neck which helps
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This allows air to pass in and out ofthe lungs. As the trachea is made of cartilaginous rings which are of C shape, it prevents the air passage notto collapse when we breathe out air. Due to the presence of rings of catilage, the air passage do not collapse when we breath out.
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