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3 February, 12:55

Which process in respiration happens first

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  1. 3 February, 14:12
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    Is this a multiple choice question? If it is just in general, it would be breathing or inhalation. To inhale the lungs expand. This is caused by the diaphragm and the muscles between your ribs contracting to expand the chest, which also expands the lungs. Air first passes through the nose and mouth, then through the Larynx (voice box), then down the trachea (wind pipe), and into the lungs then comes out.
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