Duccius[?] - inscriptions, notably a tombstone of Lucius Duccius Rufinus at York[2] (http://museums.ncl.ac.uk/archive/arma/contents/iconog/tombston/cent1/uk/york/duccius.htm)
... to pass urine to the outside, and also a reproductive function in the male, as a passage for sperm.
The external urethral sphincter is the skeletal muscle that ...