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1 BRONCHOPULMONARY SEGMENTS. Segmenta bronchopulmonalia. Lung segments supplied by individual bronchi and arteries and separated by veins and connective tissue septa. A B

2 Upper lobe of right lung. (According to Dor-land's lobus superior pulmonis dextri). Pulmo dexter, lobus superior. A

3 Apical segment of upper lobe of right lung. Segmentum apicale (S I). It is inserted like a wedge between the anterior and posterior segments. A

4 Posterior segment of upper lobe of right lung. Segmentum posterius (S II). It lies between the apical segment and the lower lobe. A

5 Anterior segment of upper lobe of right lung. Segmentum anterius (S III). It lies between the apical segment and the middle lobe. A

6 Middle lobe of right lung. (Lobus medius pulmonis dextri). Pulmo dexter, lobus medius. A

7 Lateral segment of middle lobe. Segmentum laterale (S IV). It occupies the dorsal portion of the middle lobe and does not reach the hilum. A

8 Medial segment of middle lobe. Segmentum mediale (S V). It forms the medial and diaphragmatic surfaces of the middle lobe. A

9 Lower lobe of right lung. (Lobus inferior pulmonis dextri). Pulmo dexter, lobus inferior. A

10 Superior segment. Segmentum superius (S VI). Posterosuperiorly situated apical portion of lower lobe. A

11 Subapical segment. [[Segmentum subapi-cale]]. An accessory segment occasionally present below the superior segment.

12 Medial basal (cardiac) segment (S VII). Seg-mentum basale mediale (cardiacum). It does not reach the lateral surface of the lung and is only seen from the medial and inferior surfaces. A

13 Anterior basal segment (S VIII). Segmentum basale anterius. It lies between the middle lobe and diaphragm. A

14 Lateral basal segment (S IX). Segmentum basale laterale. It lies between the posterior and anterior basal segments. A

15 Posterior basal segment (S X). Segmentum basale posterius. Located between the vertebral column and lateral basal segment. A

16 Upper lobe of left lung. (Lobus superior pulmonis sinistri). Pulmo sinister, lobus superior. B

17 Apicoposterior segment (S I + II). Segmen-tum apicoposterius. It comprises two wedge-shaped segments (apical and posterior) which lie between the oblique fissure and the anterior segment of the upper lobe. B

18 Anterior segment (S III) of upper lobe. Seg-mentum anterius. It lies between the superior lingular and apicoposterior segments. B

Superior lingular segment (S IV). Segmen-tum lingulare superius. It lies predominantly on the inferior lingular segment. B Inferior lingular segment (S V). Segmentum lingulare inferius. It lies between the superior lingular segment and the oblique fissure. B Lower lobe of left lung. (Lobus inferior pulmonis sinistri). Pulmo sinister, lobus inferior B

Superior segment (S VI). Segmentum su-perius. Apical portion of lower lobe situated posterosuperiorly near the vertebral column. B

Subapical segment. [[Segmentum subapi-cale]]. Accessory segment occasionally present below the superior segment of the lower lobe.

Medial basal (cardiac) segment (S VII). Seg-mentum basale mediale (cardiacum). It is often an inseparable part of the anterior basal segment. B

Anterior basal segment (S VIII). Segmentum basale anterius. It lies between the oblique fissure and the lateral basal segment. B Lateral basal segment (S IX). Segmentum basale laterale. It lies between the anterior and posterior basal segments. B Posterior basal segment (S X). Segmentum basale posterius. It lies beside the vertebral column below the superior segment of the lower lobe. B

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