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The main organs of the respiratory system are the nose, pharynx, trachea, bronchi, and lungs.he respiratory system â¦ does this through  breathing. When we breathe, we inhale oxygen and exhale carbon  dioxide. This exchange of gases is the respiratory system's means  of getting oxygen to the blood. To ensure that the body receives  enough oxygen and to expel waste, carbon dioxide.
MAJOR HUMAN BODY SYSTEMS. Respiratory System Your respiratory system provides the energy needed by cells of the body. Air is breathed in through the nasal cavity and/or mouth and down through the throat (the pharynx). The throat has three parts-the nasopharynx, the oropharynx, and the laryngopharynx.our digestive system consists of organs that break down food into components that your body uses for energy and for building and repairing cells and tissues. Food passes down the throat, down through a muscular tube called the esophagus, and into the stomach, where food continues to be broken down.