Lung, in air-breathing vertebrates, either of the two large organs of respiration located in the chest cavity and responsible for adding oxygen to and removing carbon dioxide from the blood. Learn about the structure, location, and function of the lungs, a major organ of the respiratory system. Find out about common lung diseases, tests, and treatments. Some types of chronic lung diseases are classified as restrictive lung disease, because of a restriction in the amount of lung tissue involved in respiration. These include pulmonary fibrosis which can occur when the lung is inflamed for a long period of time. Discover the anatomy and essential functions of the lungs, including their surfaces, borders, impressions, hilum, and roots. Explore the differences between the right and left lungs. Learn about the lobes, fissures, and segments of the lungs. This article also reviews the histology and neurovascular supply of the lungs, as well as the pleura.
