Explain with the help of flow chart process of respiratory system
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The respiratory system begins with inhalation via the nostrils or mouth. The nostrils have microscopic hairs called cilia that sweep dust and germs away from the lungs as well as nose hairs to trap dirt and dust and other debris. There is mucous to also trap particles. Air is warmed to body temperature. It then passes to the pharynx or throat on its way to the trachea. The trachea is known commonly as the windpipe....
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