The right upper lobe bronchus takes off 2 cm distal to the carina on the lateral aspect of the right main stem bronchus at a 90° angle.

It is short (10 to 15 mm) and runs obliquely upward and outward.

It quickly divides into the apical (B1), posterior (B2) and anterior (B3) segmental bronchi.

apical segmental bronchi (B1)

posterior segmental bronchi (B2)

anterior segmental bronchi (B3)