Right superior segmental bronchus (B6)

Bronchus segmentalis superior

RespiratoryOrgansThoraxRight side

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What it is
Segmental (tertiary) bronchus B6, supplying the superior bronchopulmonary segment of the right lower lobe.
Function
Conducts air to one bronchopulmonary segment, a pyramidal unit of lung with its own bronchus and segmental artery.
Size
About 4 cm long and 4–6 mm in diameter; its wall holds irregular cartilage plates.
Clinical note
The superior segment of the lower lobe is the commonest site of aspiration pneumonia in a patient lying on the back.

Nearby respiratory structures Bronchus intermedius, Right anterior basal segmental bronchus (B8), Right lateral basal segmental bronchus (B9), Right lower lobe bronchus, Right lung, lower lobe, Right medial basal segmental bronchus (B7), Right middle lobe bronchus, Right posterior basal segmental bronchus (B10), Right posterior segmental bronchus (B2), Right upper lobe bronchus