title: Urethral coitus--maximum urethral dilatation.
mesh_terms: D000328:Adult; D003075:Coitus; D004106:Dilatation; D005260:Female; D005836:Genitalia, Female / Q000002:abnormalities*; D006801:Humans; D008297:Male; D011859:Radiography; D014521:Urethra / Q000000981:diagnostic imaging / Q000502:physiology*; D001743:Urinary Bladder / Q000000981:diagnostic imaging