Left lower lobe bronchus

Bronchus lobaris inferior sinister

RespiratoryOrgansThoraxLeft side

View in 3D

What it is
Continues down and back from the left main bronchus, giving a superior segmental bronchus and the basal segmental bronchi.
Function
Secondary (lobar) bronchus: conducts air to one lobe of the lung.
Size
About 1–1.5 cm to the basal division, 8–10 mm wide.
Clinical note
Lobar bronchi are the level at which the lung is removed in a lobectomy; their walls contain irregular cartilage plates instead of rings.

Nearby respiratory structures Left anteromedial basal segmental bronchus (B7+8), Left inferior lingular segmental bronchus (B5), Left lateral basal segmental bronchus (B9), Left lung, lower lobe, Left posterior basal segmental bronchus (B10), Left superior lingular segmental bronchus (B4), Left superior segmental bronchus (B6), Left upper lobe bronchus, Parietal pleura, Visceral pleura