right crus of diaphragm

right crus of di·a·phragm

the muscular origin of the diaphragm from the bodies of the upper three or four lumbar vertebrae that passes upward to the right of the aorta toward the central tendon; the esophageal hiatus is a parting of the fibers of the right crus to allow passage of the esophagus.
Synonym(s): crus dextrum diaphragmatis [TA]