Lung Lobes and Fissures
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Bronchopulmonary Segments of the Lungs | Lung Segments | Tertiary Bronchi
- Each of the five
lung lobes is divided by connective tissue walls (= septa) into anatomical compartments called bronchopulmonary segments.
- Typically, there are 10 segments in the right lung and in the left lung. Each segment functions independently and is supplied by its own tertiary bronchus (or segmental bronchus) artery, lymph vessels, and autonomic nerves. Thus, if one segment is infected or damaged, others in the same lobe may not be affected.
Right Lung
Superior lobe
- Apical (1)
- Posterior (2)
- Anterior (3)
- Middle lobe Lateral (4)
- Medial (5)
Middle lobe
- Lateral (4)
- Medial (5)
Inferior lobe
- Superior (6) (on posterior surface)
- Medial basal (7)
- Anterior basal (8)
- Lateral basal (9)
- Posterior basal (10)
Left Lung
Inferior lobe
- Superior (6) (on posterior surface)
- Anterio-medial basal (7,8)
- Lateral basal (9)
- Posterior basal (10)
Superior lobe
- Apico-posterior (1,2)
- Anterior (3)
- Superior lingular (4)
- Inferior lingular (5)
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