BronchioliOne

The channels for oxygen. The bronchi and bronchioles are the tunnels that carry air to the functional units of the lung, the alveoli. And like all tunnels, they have a sturdy wall, which does not allow them to collapse, for example some have cartilage. These tubes also have many other functionalities, for example they are a first contact with external microbes, they secrete mucus which retains particles in the air that are harmful to the alveoli and promotes lung immunity. In addition to this, thanks to the ciliary carpet of the intraluminary cells, the clearance of mucus towards the upper respiratory tract is allowed. The bronchial walls also contain smooth muscles and have the ability to c...View all