This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Thorax, Subject name: Anatomy
[{'content': 'Which of these is true about bronchopulmonary segment? \nSelect and explain. \nA. Nonresectable, B. Spherical in shape, C. Artery is intersegmental, D. Pulmonary veins are intersegmental', 'role': 'user'}, {'content': "Answer: D \nExplanation: Ans. D Pulmonary veins are intersegmentalRef: Gray's Basic Anatomy E-book, P 87* It is a subdivision of a lung lobe,* It is pyramidal in shape, its apex lies toward the root, while its base lies on the lung surface.* It is surrounded by connective tissue septa.* It has a segmental, bronchus, a segmental artery, lymph vessels, and autonomic nerves.* The segmental vein lies in the intersegmental CT septa between the segments.* A diseased segment can be removed surgically, because it is a structural unit.", 'role': 'assistant'}]