Structures passing through the aortic hiatus of diaphragm area) Aortab) Azygos veinc) Hemiazygos veind) Thoracic ducte) Sympathetic trunk
Aortic opening
-        Level- T12
-        At osseoaponeurosis between right and left crus
-        Structures transmitted

   Aorta
   Thoracic duct
   Azygos vein
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