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There are major parts of the respiratory system the airway, the lungs, and the muscles of respiration. The airway, which includes the nose, mouth, pharynx, larynx, trachea, bronchi, and bronchioles, carries air between the lungs and the body s exterior. The lungs Continue Scrolling To Read More Below .Upper respiratory tract This includes the nose, mouth, and the beginning of the trachea the section that takes air in and lets it out . Lower respiratory tract This includes the trachea, the bronchi, broncheoli and the lungs the act of breathing takes place in this part of the system ..
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