The anatomy and function of the ureterovesical junction.
The anatomy and function of the ureterovesical junction.
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DOI：
10.1111/j.1464-410x.1963.tb02610.x
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发表时间：
1963-06-01
期刊：
影响因子：
--
通讯作者：
PUGH, R C
中科院分区：
文献类型：
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作者：
TANAGHO, E A;PUGH, R C
肾盏、肾盂和膀胱外输尿管的光滑肌肉组织由螺旋状定向的纤维组成，允许蠕动活动。当这些纤维接近膀胱壁时，它们被重新定向到纵向平面中。输尿管斜穿膀胱壁，膀胱内输尿管段仅由纵行肌纤维构成，因此不能发生输尿管狭窄。当这些平滑肌纤维接近输尿管口时，形成输尿管顶的平滑肌纤维向两侧摆动，与形成输尿管底的平滑肌纤维汇合。然后，它们散开并加入来自另一输尿管的等效肌束，并继续向尾部延伸，从而形成浅表三角。三角区经过膀胱颈，男性终止于精阜，女性终止于外尿道口内。因此，输尿管三角复合体是一个结构。输尿管口以上为管状，以下为扁平状。
The smooth musculature of the renal calyces, pelvis, and extravesical ureter is composed of helically oriented fibers that allow for peristaltic activity. As these fibers approach the vesical wall, they are reoriented into the longitudinal plane. The ureter passes obliquely through the vesical wall; the intravesical ureteral segment is thus composed of longitudinal muscle fibers only and therefore cannot undergo peristalsis. As these smooth-muscle fibers approach the ureteral orifice, those that form the roof of the ureter swing to either side to join those that form its floor. They then spread out and join equivalent muscle bundles from the other ureter and also continue caudally, thus forming the superficial trigone. The trigone passes over the neck of the bladder, ending at the verumontanum in the male and just inside the external urethral meatus in the female. Thus, the ureterotrigonal complex is one structure. Above the ureteral orifice, it is tubular; below that point, it is flat.