Right lateral basal segmental bronchus (B9)

Bronchus segmentalis lateral basal

RespiratoryOrgansThoraxRight side

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What it is
Segmental (tertiary) bronchus B9, supplying the lateral basal 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 5 cm long and 4–6 mm in diameter; its wall holds irregular cartilage plates.
Clinical note
Because each segment has its own airway and blood supply, a diseased segment can be removed on its own (segmentectomy).

Nearby respiratory structures Bronchus intermedius, Right anterior basal segmental bronchus (B8), Right lateral segmental bronchus (B4), Right lower lobe bronchus, Right lung, lower lobe, Right medial basal segmental bronchus (B7), Right medial segmental bronchus (B5), Right middle lobe bronchus, Right posterior basal segmental bronchus (B10), Right superior segmental bronchus (B6)