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Respiratory System n,l - Coggle Diagram
Respiratory System 
Nose
It allows air to enter your body, then filters debris and warms and moistens the air. Your nose gives you a sense of smell and helps shape your appearance.
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Larynx
It's a hollow tube that lets air pass from your throat (pharynx) to your trachea on the way to your lungs. It also contains your vocal cords and is essential to human speech, so it's often called the voice box.
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Pharynx
The pharynx, usually called the throat, is part of the respiratory system and digestive system. It carries air, food and fluid down from the nose and mouth. The pharynx is the site of common illnesses, including sore throat and tonsillitis.
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Trachea
Trachea's main function is to carry air in and out of your lungs. Because it's a stiff, flexible tube, it provides a reliable pathway for oxygen to enter your body.
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Functions
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Protection – from dust and microbes entering body through mucus production, cilia, and coughing.
Facts
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Your lungs are not sterile or germ-free, even in health. ...
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Your nose is a filter, heater and a humidifier.
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