Describe the flow of air through the respiratory system

The air that we breathe in enters the nose or mouth, flows through the throat (pharynx) and voice box (larynx) and enters the windpipe (trachea). The trachea divides into two hollow tubes called bronchi.

You inhale air into your nose or mouth, and it travels down the back of your throat and into your windpipe, or trachea. ... As the bronchial tubes pass through the lungs, they divide into smaller air passages called bronchioles. The bronchioles end in tiny balloon-like air sacs called alveoli.

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