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 abdominal aorta begins at the aortic hiatus of the diaphragm, anterior to the 12th thoracic vertebra.
The medial margins of the two crura meet in the midline and form the ill-defined median arcuate ligament and form the boundaries of the aortic hiatus. (1) Although the diaphragm is studied as a respiratory muscle, currently it is considered to have two distinct functional parts; the costal diaphragm with major respiratory role and crural diaphragm with minor respiratory role.
The aortic hiatus was dissected and aortic opening enlarged.