(2)Openings of diaphragm ①Aortic hiatus inferior venacavabrcm T8 at the level of 12th thoracic vertebra,the thoracic aorta and thoracic duct passing T10 through esophagus ②Esophageal hiatus 12 at the level of 10th thoracic vertebra,the esophagus and vagus thoracic aorta n.passing through ③caval opening at the level of 8th thoracic vertebra, inferior vena cava and right phrenic nerve passing through❑ (2) Openings of diaphragm ① Aortic hiatus at the level of 12th thoracic vertebra, the thoracic aorta and thoracic duct passing through ② Esophageal hiatus at the level of 10th thoracic vertebra,the esophagus and vagus n. passing through ③ caval opening at the level of 8th thoracic vertebra, inferior vena cava and right phrenic nerve passing through T8 T10 T12 inferior vena cava esophagus thoracic aorta