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During inhalation or exhalation air is pulled towards or away from the lungs, by several cavities, tubes, and openings. The organs of the respiratory system make sure that oxygen enters our bodies and carbon dioxide leaves our bodies. The respiratory tract is the path of air from the nose to the lungs.
Air enters the body when you inhale (Breathe in) air enters through the mouth and into the lungs. and then exhale (Breathe out) carbon dioxide (CO2). 5 people found this useful.Edit. perfect Mix of oxygen and Carbon dioxide enter your body through your mouth and go through your breathing pipe to your lungs it then it goes past a paperthin skin which unox â¦ igenated Blood goes past and then your blood is oxigenated!.