the lungs labeled diagram

August 03, 2026

General

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Humans have two lungs, a right lung and a left lung. They are situated within the thoracic cavity of the chest. The right lung is bigger than the left, and the left lung shares space in the chest with the heart. The lungs together weigh approximately 1.3 kilograms (2.9 lb), and the right is heavier. Your lungs are a pair of organs that are the main part of your respiratory system, a network of structures and tissues that allow you to breathe. They pull air into your body so your tissues can get oxygen. 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. The lungs are soft, light, spongy, elastic organs that normally, after birth, always contain air. Alveoli are the functional units of the lungs that permit gas exchange between the air in the lungs and the blood in the capillaries of the lungs. Alveoli are found in small clusters called alveolar sacs at the end of the terminal bronchiole. Lungs are the respiratory organs in our body. All the gas exchange that occurs in our body takes place in the lungs. Humans have two lungs. For related background details, please refer to our report on lift axle air control valve diagram. They are located in the thorax, either side of the mediastinum. The function of the lungs is to oxygenate blood. They achieve this by bringing inspired air into close contact with oxygen-poor blood in the pulmonary capillaries. Discover where the lungs are located, how they function, and why their position in the chest is vital for breathing and overall health.