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Function of the lungsThe function of the lungs is to transport  oxygen into the bloodstream and to take carbon dioxide out of the  bloodstream.trust me, my crappy college prâ¦ofessor told me so. he is  a poohead.
The respiratory system provides oxygen to the bodyâs cells while removing carbon dioxide, a waste product that can be lethal if allowed to accumulate. There are 3 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 bodyâs exterior.The lungs...Click to read more below. The cells of the human body require a constant stream of oxygen to stay alive.he main function of the bronchi and bronchioles is to carry air from the trachea into the lungs. Smooth muscle tissue in their walls helps to regulate airflow into the lungs. When greater volumes of air are required by the body, such as during exercise, the smooth muscle relaxes to dilate the bronchi and bronchioles.