How can you protect yourself from respiratory infections?
Cold and flu viruses are spread through droplets. One of the most effective things you can do to protect yourself and others is stop the viruses from...
The lungs make it possible to breath and supply the blood and body with oxygen from the air. While breathing in, the air passes the nose, mouth and windpipe until it reaches the bronchi. On exhalation, it travels the same way in the other direction.