Lungs

I’ve been studying and have learned what your lungs and passages that lead to them are all about. We breath out all of the waste carbon dioxide we breath in, and when we breath in the air is sucked down a tube called the windpipe or trachea which is lined with mucus. The mucus is warmed and moistened by the air so it is easier to move. The mucus also prevents dirt from going into your lungs. Tiny hairs called cilia move the mucus up towards your throat and nose. The trachea splits into two separate tubes each called a primary bronchus one leads to each lung. The other bronchus the braches of and become secondary and tertiary bronchi and form narrow tubes called bronchioles.