|Description:||The picture can be divided into three parts. On the right is a portion
of a bronchiole with its associated pulmonary artery (two branches).
The mucosa is thrown into little folds and the wall is thick and solid.
The middle of the picture shows the respiratory bronchiole with the
"wall-door-wall-door" arrangements of thick walled portion intespaced
with thin-walled alveoli. The left side of the picture shows a portion
of an alveoli duct with "doors only" arrangements of alveoli. "Looking
backward", the bronchiole is a terminal bronchiole because it
immediately precceds a respiratory bronchiole. PK1600. K4. H&E.
Original mag. 33x. Terminal Bronchiole. Respiratory Bronchiole.
Alveolar duct. Pulmonary artery. Lung. Respiraqtory System. Cat.|