Human Anatomy Part 1 - K. A. Dyubenko, A. K. Kolomiyytsev, Yu. B. Chaykovsky 2002

Special Part
Respiratory system, systema respiratorium [respiratory apparatus, apparatus respiratorius] - General Overview
Lungs - Segmental Structure of the Lungs

The bronchopulmonary segment (segmentum bronchopulmonale) is a portion of the lung (Fig. 293) supplied by a corresponding segmental bronchus, along with its accompanying Blood Vessels (pulmonary and bronchial Arteries and Veins), Lymphatic vessels, and nerves. The segments are separated from one another by Connective Tissue partitions containing intersegmental Pulmonary veins. They are shaped like irregular cones or pyramids, with their apices directed toward the hilum of the lung and their bases toward the surface. Pathological processes are frequently localized within a single segment. This makes it possible, when surgery is required, to perform a more conservative operation—removing only the affected segment rather than an entire lobe or the whole lung.

Below are the names of the segmental Bronchi and bronchopulmonary segments According to the International Anatomical Nomenclature, PNA (1985).

Right lung (pulmo dexter), superior lobe (lobus superior).

1. Apical segmental bronchus (B I), bronchus segmentalis apicalis (B I). Apical segment (S I), segmentum apicale (S I).

2. Posterior segmental bronchus (B II), bronchus segmentalis posterior (B II). Posterior segment (S II), segmentum posterius (S II).

3. Anterior segmental bronchus (B III), bronchus segmentalis anterior (B III). Anterior segment (S III), segmentum anterius (S III).

Right lung (pulmo dexter); middle lobe (lobus medius).

4. Lateral segmental bronchus (B IV), bronchus segmentalis lateralis (B IV). Lateral segment (S IV), segmentum laterale (S IV).

5. Medial segmental bronchus (B V), bronchus segmentalis medialis (B V). Medial segment (S V), segmentum mediale (S V).

Right lung (pulmo dexter), inferior lobe (lobus inferior).

6. Superior segmental bronchus (B VI), bronchus segmentalis superior (B VI). Superior segment (S VI), segmentum superius (S VI).

7. Medial basal (cardiac) segmental bronchus (B VII), bronchus segmentalis basalis medialis (cardiacus) (B VII).

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Fig. 293. Segmental Structure OF THE Lungs:

A, B - segments of the right lung (external and internal views); C, D - segments of the left lung (external and internal views)

Medial basal segment (cardiac) (S VII), segmentum basale mediale (cardiacum) (S VII).

8. Anterior basal segmental bronchus (B VIII), bronchus segmentalis basalis anterior (B VIII).

Anterior basal segment (S VIII), segmentum basale anterius (S VIII).

9. Lateral basal segmental bronchus (B IX), bronchus segmentalis basalis lateralis (B IX).

Lateral basal segment (S IX), segmentum basale laterale (S IX)

10. Posterior basal segmental bronchus (B X), bronchus segmentalis basalis posterior (B X).

Posterior basal segment (S X), segmentum basale posterius (S X).

Left lung (pulmo sinister), superior lobe (lobus superior).

1. Apicoposterior segmental bronchus (B I+II), bronchus segmentalis apicoposterior (B I+II).

Apicoposterior segment (S I+II), segmentum apicoposterius (S I+II).

2. Anterior segmental bronchus (B III), bronchus segmentalis anterior (B III). Anterior segment (S III), segmentum anterius (S III).

3. Superior lingular bronchus (B IV), bronchus lingularis superior (B IV). Superior lingular segment (S IV), segmentum lingulare superius (S IV).

4. Inferior lingular bronchus (B V), bronchus lingularis inferior (B V). Inferior lingular segment (S V), segmentum lingulare inferius (S V).

Left lung, pulmo sinister, inferior lobe, lobus inferior.

5. Superior segmental bronchus (B VI), bronchus segmentalis superior (B VI). Superior segment (S VI), segmentum superius (S VI).

6. Medial basal (cardiac) segmental bronchus (B VII), bronchus segmentalis basalis medialis (cardiacus) (B VII).

Medial basal (cardiac) segment (S VII), segmentum basale mediale (cardiacum) (S VII).

7. Anterior basal segmental bronchus (B VIII), bronchus segmentalis basalis anterior (B VIII).

Anterior basal segment (S VIII), segmentum basale anterius (S VIII).

8. Lateral basal segmental bronchus (B IX), bronchus segmentalis basalis lateralis (B IX).

Lateral basal segment (S IX), segmentum basale laterale (S IX).

9. Posterior basal segmental bronchus (B X), bronchus segmentalis basalis posterior (B X).

Posterior basal segment (S X), segmentum basale posterius (S X).