The organs that make up the respiratory system include the nose,mouth,pharynx ( throat),trachea ( windpipe), larynx ( voice box), diaphragm, bronchi, and lungs. Because this exchange must take place all the time, it is necessary to always keep this pathway open. The structures themselves help do this. The trachea and bronchi are kept open by their anatomical stricture. The tiny hairs in the nose trap dust so it does not reach the lungs. On the top of the trachea, opening from the phatynx, is a structure known as the larynx
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