This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Unknown
[{'content': 'The following statements concerning the abdominal part of the sympathetic trunk are not true except: \nSelect and explain. \nA. It enters the abdomen behind the lateral arcuate ligament, B. The trunk passes in 6 segmentally arranged ganglia, C. All the ganglia receive white rami communicantes, D. Gray rami communicantes are given off to the lumbar spinal nerves', 'role': 'user'}, {'content': 'Answer: D \nExplanation: The abdominal portion of the sympathetic trunk is situated in front of the vertebral column, along the medial margin of the\xa0Psoas major.\nIt consists usually of four lumbar ganglia, connected together by interganglionic cords. It is continuous above with the thoracic portion beneath the medial lumbocostal arch, and below with the pelvic portion behind the common iliac artery.\nThe ganglia are of small size, and placed much nearer the median line than are the thoracic ganglia.\nGray rami communicantes pass from all the ganglia to the lumbar spinal nerves. The first and second, and sometimes the third, lumbar nerves send white rami communicantes to the corresponding ganglia.\nThe rami communicantes are of considerable length, and accompany the lumbar arteries around the sides of the bodies of the vertebrae, passing beneath the fibrous arches from which some of the fibers of the Psoas major arise.', 'role': 'assistant'}]