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Aortic narrowing surrounded by arch of aorta. Lower esophageal sphincter (diaphragmatic narrowing) connected to stomach. Starts at the level of C6 vertebra (cricoid cartilage) It lies on the vertebral column. accompanied by right and left vagus nerves. passes through esophageal hiatus of diaphragm at the level of T10 and enters thoracic cavity ................
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