The right lower lobe bronchus is very short. It divides into the superior segment (B6) which originates on the posterior aspect of the bronchus intermedius opposite the middle lobe bronchus, mediobasalis (B7) and the basal bronchi, anterobasal (B8), laterobasal (B9), and posterobasal (B10).

superior segment (B6)

mediobasalis (B7)

anterobasal (B8), laterobasal (B9) and posterobasal (B10)