The lungs are a pair of vital respiratory organs located in the chest, responsible for exchanging oxygen and carbon dioxide between the air and the bloodstream. Each lung is divided into sections called lobes — three on the right and two on the left. When we breathe in, the lungs fill with air, and oxygen passes into the blood while carbon dioxide is removed. The lungs are protected by the ribcage and surrounded by a thin membrane called the pleura. Their efficient functioning is essential for supplying oxygen to every cell in the body and maintaining life. Our 3D model allows users to explore the structure and function of the lungs in an interactive, educational way.
The lungs work by allowing oxygen to enter the blood and removing carbon dioxide from it. When we inhale, air travels through the nose or mouth, down the trachea, and into the bronchi, which branch into smaller bronchioles inside the lungs. At the end of the bronchioles are alveoli — tiny air sacs where oxygen passes into the blood and carbon dioxide is collected from it. During exhalation, the diaphragm relaxes, pushing air rich in carbon dioxide out of the body. This continuous exchange of gases is essential for providing oxygen to body tissues and maintaining a stable internal environment.
The lungs are spongy, cone-shaped organs located on either side of the chest (thorax). Each lung is enclosed in a pleural sac and separated by the mediastinum, where the heart and major blood vessels reside. The right lung has three lobes (superior, middle, inferior), while the left lung has two lobes and a cardiac notch to accommodate the heart. Inside each lung, air passages called bronchi branch into smaller bronchioles and end in alveoli, tiny air sacs where gas exchange occurs. The lungs are richly supplied with blood vessels and work closely with the diaphragm and intercostal muscles to support breathing. This intricate structure allows efficient oxygen intake and carbon dioxide removal.