Bronchus intermedius

RespiratoryOrgansThoraxRight side

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What it is
The short continuation of the right main bronchus between the upper lobe origin and the middle/lower lobe bronchi.
Function
Secondary (lobar) bronchus: conducts air to one lobe of the lung.
Size
About 2–3 cm long, 10–12 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.