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Respiratory system - Wikipedia The respiratory system (also respiratory apparatus, ventilatory system) is a biological system consisting of specific organs and structures used for gas exchange in animals and plants
Human respiratory system | Description, Parts, Function . . . Human respiratory system, the system in humans that takes up oxygen and expels carbon dioxide The major organs of the respiratory system include the nose, pharynx, larynx, trachea, bronchi, lungs, and diaphragm
How the Lungs Work - The Respiratory System | NHLBI, NIH When you breathe in, air enters your airways and travels down into the air sacs, or alveoli, in your lungs This is where gas exchange takes place The circulatory system, which is made up of the heart and blood vessels, supports the respiratory system by bringing blood to and from the lungs