The trachea is a component of the respiratory system. The trachea is also described as the windpipe and function as a funnel enabling the entry of fresh air down from the outside world into our bodies.

The upper airway refers to the component of the respiratory system which extends form the nose to the larynx. The upper airway is important because it must always stay open for you to be able to breathe. It also helps to moisten and warm the air before it reaches your lungs.