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The human respiratory system is a series of organs responsible for taking in oxygen and expelling carbon dioxide. The primary organs of the respiratory system are lungs, which carry out this exchange of gases as we breathe. Red blood cells collect the oxygen from the lungs and carry it to the parts of the body where it is needed, according to the American Lung Association.
Introduction to parts of the respiratory system and their function. Respiratory system consists of the organs that help to breathe. Respiration also known as breathing is the process which delivers oxygen from the external atmosphere to the body and removes the carbon dioxide from body and expels out.ronchi: The bronchi are the two air tubes that branch off of from the trachea and carry atmospheric air directly into the lungs. Lungs: The main organ of the respiratory system is lungs. Lungs are the site in body where oxygen is taken into and carbon dioxide is expelled out.