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: Anatomy
[{'content': 'Oesophagus crosses the diaphragm at the level of ? \nSelect and explain. \nA. T8, B. T10, C. T12, D. T2', 'role': 'user'}, {'content': 'Answer: B \nExplanation: The distal end of the esophagus enters the abdominal cavity in the upper left quadrant by traversing the diaphragm at the T10 veebral level. The esophagus immediately transitions into the stomach, with the cardiac sphincter serving as the transition boundary. Coursing parallel to the esophagus are the anterior and posterior vagal trunks.', 'role': 'assistant'}]