Koraitim M, Schäfer W, Melchior H, Lutzeyer W
Invest Urol. 1977 May;14(6):496-7.
The dynamic behavior of the male bladder neck during urinary continence was studied by electromyography in dogs and rabbits. On vesical filling, increased electrical activity in the form of biphasic potentials was recorded from the anterolateral segment of the bladder neck. These biphasic potentials became more frequent and higher in voltage with further filling of the bladder. Concurrently, the posterior segment showed no significant electromyographic changes. These findings indicate muscular contraction of only the anterolateral part of the bladder neck during vesical filling. We conclude that the sphincteric function of the bladder neck during urinary continence is achieved by the active muscular contraction of its anterolateral segment. We postulate that the posterior segment is mainly concerned with the genital function of the bladder neck.
通过对狗和兔子进行肌电图研究，观察了雄性膀胱颈在尿失禁期间的动态行为。在膀胱充盈时，膀胱颈前外侧段记录到以双相电位形式增加的电活动。随着膀胱进一步充盈，这些双相电位变得更加频繁且电压更高。同时，后段未显示出明显的肌电图变化。这些发现表明在膀胱充盈期间仅膀胱颈前外侧部分发生肌肉收缩。我们得出结论，尿失禁期间膀胱颈的括约肌功能是通过其前外侧段的主动肌肉收缩来实现的。我们推测后段主要与膀胱颈的生殖功能有关。
