Lungs

3

Plate202



IntrapulmonaryBloodCirculation:Schema

Terminal bronchiole

Bronchial artery (from left heart

via thoracic aorta)

Pulmonary

artery (from

right heart)

Pulmonary vein

(to left heart)

Respiratory

bronchioles

Capillary plexuses

within alveolar

wall

Pulmonary

vein (to

left heart)

Visceral pleura and subpleural capillaries

Capillary bed within alveolar wall

(

cut away in places

)

Septum

Septum

Pulmonary arteries and their branches distribute segmentally with the bronchi.

Pulmonary veins and their tributaries drain intersegmentally.