How Our Lungs Work: From Breath to Blood
A human can spend 3 weeks without food, 3 days without water and less than 3 minutes without air. Thanks to the work of our lungs we have the ability to breathe. Breathing is fundamental to any human, but why exactly is that? When we breathe the air travels from the outside environment into our body. Firstly the air passes through the nose or mouth, which represent entry ways, and then travels to the throat (pharynx). After passing through the pharynx the air continues traveling deeper into our body past the voice box (larynx) and through the windpipe (trachea). The trachea splits into the left and right bronchi (one for each lung). Each bronchus divides into narrower and narrower airways within the lungs. Our lungs are located on both sides of the breast bone within the chest cavity. They are separated into five lobes and they contain small balloons called "alveoli". The alveoli come from the bronchi. As the trachea splits into bronchi...
