Bronchus
Bronchus a bronchi is an airway passage in the respiratory system that transports air to the lungs. The right main bronchus and the left main bronchus are the first bronchi to branch off of the trachea. These are the largest and enter the lungs at each hilum, where they branch into secondary bronchi called lobar bronchi and tertiary bronchi called segmental bronchi. Additional subdivisions of the segmental bronchi are known as 4th order, 5th order, and 6th order segmental bronchi, or as subsegmental bronchi when grouped together. Bronchioles are the bronchi when they are too narrow to be supported by cartilage. There is no gas exchange in the bronchi.
Also see
This is a short summary article. For quality control, we do not encourage or allow strangers to edit the content.