tell me the passage of air?
asked by madhuri (student)
When we inhale, air enters the body through the nose. The air flows from the nostrils to the nasal passages. The nasal passages are lined with tiny hairlike structures and a sticky substance called mucus. These structures and the mucus filter dust and dirt from the air. In addition, cold air is warmed and moistened as it moves through the nasal passages. From the nose, the air passes through the pharynx (the cavity behind the nose and mouth) and the larynx (the voice box). The air then enters the trachea.