Pulmonary vein
Oxygenated blood from alveolar capillaries flows into small pulmonary venules that gradually anastomose into larger veins. These vessels do not accompany respiratory passageways; instead, they travel alone, frequently seen in the connective tissue that supports the lung. 200x
Pulmonary veins
Oxygenated blood from alveolar capillaries flows into small pulmonary venules that gradually anastomose into larger veins. These vessels do not accompany respiratory passageways; instead, they travel alone, frequently seen in the connective tissue that supports the lung. 200x
Alveolar ducts
Oxygenated blood from alveolar capillaries flows into small pulmonary venules that gradually anastomose into larger veins. These vessels do not accompany respiratory passageways; instead, they travel alone, frequently seen in the connective tissue that supports the lung. 200x
Alveolar sacs
Oxygenated blood from alveolar capillaries flows into small pulmonary venules that gradually anastomose into larger veins. These vessels do not accompany respiratory passageways; instead, they travel alone, frequently seen in the connective tissue that supports the lung. 200x
Image source >
This image was taken of a slide in the University of Michigan collection.