Your lungs are vital organs that fuel your body with oxygen and remove carbon dioxide through a process called respiration. With each breath, air travels down your windpipe, fills tiny air sacs called alveoli, and diffuses oxygen into your bloodstream. Simultaneously, waste gases are expelled as you exhale. The lungs work in harmony with the diaphragm and other muscles to maintain thi... https://www.en-eng-breathe.com/