Bronchopulmonary segment

Each of the tertiary bronchi serves a specific bronchopulmonary segment. These segments each have their own artery. Thus, each bronchopulmonary segment is supplied by a bronchus, and an artery.

There are 10 bronchopulmonary segments per lung (3 in right superior lobe, 2 in middle right lobe, 5 in both right and left inferior lobe, and 5 in left superior lobe, in which 2 of the five reside in the lingula), each of which is separated from the others by a layer of connective tissue.

This means that each bronchopulmonary segment is a discrete anatomical and functional unit, and this separation mean that a bronchopulmonary segment can be surgically removed without affecting the function of the other segments.

Bronchopulmonary segments of right lung
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 * superior lobe
 * apical
 * posterior
 * anterior
 * middle lobe
 * lateral (superior lingular)
 * medial (inferior lingular)
 * inferior lobe
 * superior
 * medial-basal
 * anterior-basal
 * lateral-basal
 * posterior-basal

Bronchopulmonary segments of left lung
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 * superior lobe
 * apico-posterior (merger of "apical" and "posterior")
 * anterior
 * lingula of superior lobe
 * inferior lingular
 * superior lingular
 * inferior lobe
 * superior
 * antero-medial basal (merger of "anterior basal" and "medial basal")
 * lateral basal
 * posterior basal