Giraud B
Service d'Urologie, Hôpital Saint-Jacques, Cedex.
Ann Urol (Paris). 1989;23(4):326-33.
The author presents a description of the microscopic anatomy of the bladder neck and female urethra based on reconstructions derived from microscopic sections performed in 3 planes. He describes the horizontal and vertical fibres. The horizontal fibres form 2 opposed, arched layers encircling the upper part of the bladder neck and derived from the detrusor. Inferiorly, there is a very small, annular, smooth muscle sphincter which surrounds the middle part of the urethra like a cuff. The vertical fibres arise from the detrusor mostly terminate in the periphery of the circular fibres. Several fibres also pass in the urethral lumen.
作者基于在三个平面上进行的显微切片重建，对膀胱颈和女性尿道的微观解剖结构进行了描述。他描述了水平纤维和垂直纤维。水平纤维形成两个相对的拱形层，环绕膀胱颈上部，源自逼尿肌。在下方，有一个非常小的环形平滑肌括约肌，像袖口一样围绕尿道中部。垂直纤维大多起源于逼尿肌，终止于环形纤维的周边。也有一些纤维穿过尿道腔。
