The air that enters the nasal cavity flows down the trachea. The trachea has a number of adaptations: cartilage rings in the walls of the trachea help to keep it open ciliated epithelium and ...

Treating collapsing trachea in dogs can be a daunting prospect for owners. Tracheal collapse occurs when the windpipe becomes flattened and the airflow in and out of the lungs is obstructed.

Bronchus The trachea splits into a left and right bronchus (plural: bronchi), each leads to a lung. Bronchiole Each bronchus splits again and again into thousands of smaller tubes called ...