(ret'sē-ŭs )

Swedish anatomist, 1796–1860.

R. gyrus The supracallosal and subcallosal gyri.

incremental line of R.Periodic dark lines seen in the enamel of a tooth that represent occasional metabolic disturbances of mineralization.

space of R.An area in the lower portion of the abdomen between the bladder and pubic bones and bounded superiorly by the peritoneum. It contains areolar tissue, fat, and a plexus of veins.

veins of R.The veins that communicate between the mesenteric veins and the inferior vena cava.