hiatus

(redirected from Aortic hiatus)
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Related to Aortic hiatus: Aortic opening

hiatus

Anatomy
1. a natural opening or aperture; foramen
2. a less common word for vulva

hiatus

[hī′ād·əs]
(anatomy)
A space or a passage through an organ.
(geology)
A gap in a rock sequence due to a lack of deposition of a bed or to erosion of beds.
References in periodicals archive ?
The aortic hiatus is a foramen in which the aorta passes from the thorax to the abdomen.
Regarding the anatomic aspect, the median arcuate ligament is connective fibrous or thick fibromuscular, arciform structure, transversally crossing the aorta at the T12 vertebra level and attaching right in front of this vessel to these tendinous portions of both crura to form the anterior margin of the aortic hiatus (Reuter & Bernstein; Joubaud et al.
Also Lindner & Kemprud identified the median arcuate ligament as a structure variable in size, shape and position usually presented a round fibrous of 1 to 3 mm in width formed by condensing the fibrous margin of the two crura of diaphragm decussating to form the ventral border of the aortic hiatus easily observed by naked eye.