Left inferior lingular segmental bronchus (B5)

Bronchus segmentalis inferior lingular

RespiratoryOrgansThoraxLeft side

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What it is
Segmental (tertiary) bronchus B5, supplying the inferior lingular bronchopulmonary segment of the left upper lobe.
Function
Conducts air to one bronchopulmonary segment, a pyramidal unit of lung with its own bronchus and segmental artery.
Size
About 2 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 Bronchial tree (subsegmental bronchi), Left anterior segmental bronchus (B3), Left apicoposterior segmental bronchus (B1+2), Left lower lobe bronchus, Left lung, upper lobe (with lingula), Left main bronchus, Left superior lingular segmental bronchus (B4), Left upper lobe bronchus, Parietal pleura, Visceral pleura