rectosigmoid sphincter

(redirected from OBeirne sphincter)

rec·to·sig·moid sphinc·ter

a circular band of muscular fibers at the rectosigmoid junction.

O'Bierne,

James, Irish surgeon, 1786-1862.
O'Bierne sphincter - a circular band of muscular fibers at the rectosigmoid junction. Synonym(s): rectosigmoid sphincter
O'Bierne tube