When breathing in what happens?

Answer 1

When you breath the first step is when the air enters your nose, then as it passes through your nose it is warmed by the tiny hairs and blood vessels there and any dust and/or foreign articles are caught by mucus and those tiny hairs, then the air goes through the pharynx and larynx and as it passes through them it gets warmer and clearer by the same method in the nose, it finally reaches the trachea, and then divides when the trachea becomes two bronchi which then branch again and again until it reaches the little sacs called alveoli and the air fills them up, oxygen and co2 exchange happens then, by means of capillaries that pass around these sacs, the capillaries give the alveoli co2 and take the oxygen, then the co2 goes back where the oxygen had come from, so the lungs are empty and need another dose of air, so it happens all over again and so on.

Air passes down the throat and into the trachea. Soon the air reaches a place where the trachea branches into two tubes. Each of these called bronchus.

By Erendida Ramirez.