Right posterior segmental bronchus (B2)

Bronchus segmentalis posterior

RespiratoryOrgansThoraxRight side

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What it is
Segmental (tertiary) bronchus B2, supplying the posterior bronchopulmonary segment of the right upper lobe.
Function
Conducts air to one bronchopulmonary segment, a pyramidal unit of lung with its own bronchus and segmental artery.
Size
About 3 cm long and 4–6 mm in diameter; its wall holds irregular cartilage plates.
Clinical note
In a person lying on the right side, aspirated material drains into this segment.

Nearby respiratory structures Bronchus intermedius, Carina of trachea, Right anterior segmental bronchus (B3), Right apical segmental bronchus (B1), Right lower lobe bronchus, Right lung, upper lobe, Right main bronchus, Right middle lobe bronchus, Right superior segmental bronchus (B6), Right upper lobe bronchus