Aortic hiatus
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The aortic hiatus is a midline[1]: 185 opening in the posterior part of the diaphragm giving passage to the descending aorta as well as the thoracic duct, and variably the azygos and hemiazygos veins.[2] It is the lowest and most posterior of the large apertures.[citation needed]
Quick Facts Details, Identifiers ...
Aortic hiatus | |
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Details | |
Identifiers | |
Latin | hiatus aorticus |
TA98 | A04.4.02.010 |
TA2 | 2342 |
FMA | 58288 |
Anatomical terminology |
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It is located at the level of the inferior border of the twelfth thoracic vertebra (T12),[2] posterior to the median arcuate ligament[2][1]: 185 between the two crura of the diaphragm.[2]