Clean air then enters the two bronchi, one bronchus going to each lung. The bronchi in the lungs split into smaller and smaller tubes called bronchioles. These end in microscopic air sacs called ...

We also answer some common questions. A person’s windpipe splits into two bronchi, one for each lung. The bronchi then divide into smaller bronchi, which split into bronchioles. These lead to ...

The trachea divides into two bronchi, with one bronchus for each lung. Each bronchus divides further in the lungs into smaller tubes called bronchioles. At the end of each bronchiole, there is a ...

“Today, the Holy Father suffered two episodes of acute respiratory insufficiency, caused by a significant accumulation of ...