What does the pulmonary ligament contain?

1.	What does the pulmonary ligament contain?
A.	The inner surface of the thoracic wall
B.	Interpleural space/ Pleural cavity
C.	A thin layer of areolar tissue with a few lymphatics
D.	The pulmonary veins to expand during the increased venous return, such as during exercise
Answer» D. The pulmonary veins to expand during the increased venous return, such as during exercise

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