title: There is a possibility that the urethra opens actively and independently by the lateral movement of the urethral muscles themselves.
authors: Watanabe Memorial Choumei Research Laboratory, Omihachiman, Shiga, Japan. watanabe.choumei.rl@shoshikai.or.jp.
authors: Hiroki
authors: H
authors: Watanabe
authors: Department of Urology, Nihon University School of Medicine, Tokyo, Japan.
authors: Satoru
authors: S
authors: Takahashi
authors: Department of Urology, University of Southern California, Norris Cancer Center, Los Angeles, California, USA.
authors: Osamu
authors: O
authors: Ukimura
mesh_terms: D005260:Female; D006801:Humans; D008297:Male; D014463:Ultrasonography; D014521:Urethra / Q000000981:diagnostic imaging* / Q000502:physiology*; D014554:Urination / Q000502:physiology*