Bronchopulmonary segment of lung: brief and important review

Bronchopulmonary segment

1.       Definition: it  is anatomical , functional and surgical subdivision of lung which is supplied by  tertiary (segmental ) bronchus

2.       Conducting part of bronchopulmonary segment is supplied by bronchial artery (contain O 2 rich blood)

3.       And respiratory part of bronchopulmonary segment is supplied by pulmonary artery  (contain CO2 rich blood )

4.       Shape : roughly pyramidal in shape, 

5.       Apex of pyramid towards the hilum

6.       Base of pyramid towards the surface

7.       Each segment is separated by other by connective tissue , which contain pulmonary vein (O2 rich blood) and lymphatic.

8.       Importance: it is important because a surgeon can remove one segment without seriously disrupting surrounding segment

9.      

 Number of bronchopulmonary segment  in each lung : 10

         Right lung : 

         

Upper lobe

1.       Apical

2.       Posterior

3.       Anterior

Middle lobe

4.       Lateral

5.       Medial

Lower  lobe

1.       Apical

2.       Medial basal

3.       Anterior basal

4.       Lateral basal

5.       Posterior basal

left lung : 

Upper lobe

1.       Apical

2.       Posterior

3.       Anterior

4.       Superior lingula

5.       Inferior lingula

Lower lobe

6.Apical

7.Medial basal

8.Anterior basal

9.Lateral basal

10.Posterior basal