What Is a Terminal Bronchiole?

Bronchulus

Bronchiole

Right!

Bronchulus

Also known as bronchial tips, tracheal branches and so on. When distinguishing the narrow bronchi from other tracheal branches, it refers to the latter.

The bronchus branches gradually in the lung to less than 1mm in diameter, and the cartilage on the wall disappears, which is called bronchioles.

Bronchioles: Many longitudinal folds on the lumen surface, the mucosal epithelium is a single layer of ciliated columnar epithelium, the smooth muscle is significantly thickened, and the cartilage pieces disappear.