Once the blood has received oxygenation, it leaves the lungs via four pulmonary veins (two for each lung). The bronchi, lung roots, visceral pleura and supporting lung tissues require an extra nutritive blood supply. This is delivered by the bronchial arteries, which arise from the descending aorta. The bronchial veins provide venous drainage. What are lungs definition, what body cavity is the location, anatomy (segmental anatomy left, right lung lobe), function, where gas exchange occurs, illustration 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. A major organ of the respiratory system, each lung houses structures of both the conducting and respiratory zones. The main function of the lungs is to perform the exchange of oxygen and carbon dioxide with air from the atmosphere. To this end, the lungs exchange respiratory gases across a very large epithelial surface area—about 70 square meters—that is highly permeable to gases. Gross Anatomy of the Lungs The lungs are pyramid-shaped, paired organs that are connected to the trachea by ...
