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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, Facts . . . 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
Introduction to Diagnosis of Lung Disorders - The Merck Manuals The respiratory system starts at the nose and mouth and continues through the airways and the lungs Air enters the respiratory system through the nose and mouth and passes down the throat (pharynx) and through the voice box, or larynx The entrance to the larynx is covered by a small flap of tissue (epiglottis) that automatically closes during swallowing, thus preventing food or drink from