You may also stretch your external sphincter muscles.

你也有可能会撑大你的外括约肌。

By contracting the skeletal muscles around the external sphincter, urination can be stopped voluntarily.

通过尿道外括约肌附近的骨骼肌收缩，排尿过程可以受意识支配而停止。

Whooshing downwards, the fluid enters the urethra and stops short at the external urethral sphincter.

液体飞速的向下流进尿道，从膀胱经尿道排出体外。

It also decreases motor nerve stimulation to the external sphincter allowing it to relax as well.

其同时减少运动神经元对外括约肌的刺激，使其舒张。

Stress incontinence treatments typically focus on strengthening the external sphincter muscle by doing things like Kegel exercises.

压力性尿失禁的治疗侧重增强外括约肌的收缩力，例如通过做Kegel运动。

Alright, as a quick recap, urinary incontinence occurs when urine involuntarily leaves the bladder —through the internal and external sphincter muscles.

得！快速回顾一下：尿失禁是指尿液不自主地通过内外括约肌离开膀胱。

The brain can counter it if it's not a good time to urinate by sending another signal to contract the external urethral sphincter.

通过发射另一个信号来控制尿道外括约肌大脑会判断现在是不是排尿的合适时机。

Additionally, there's an external sphincter, at the level of the urogenital diaphragm in the floor of the pelvis which is under voluntary control.

此外，也存在尿道外括约肌，位于盆底的尿生殖膈，受意识支配。

This sets off a reflex arc called the micturition reflex which causes contraction of the bladder and relaxation of the internal sphincter and external sphincter.

这就触发了一个反射弧，叫做排尿反射，导致膀胱收缩、尿道内外括约肌扩张。

But under normal circumstances, your decision to urinate stops the brain's signal to the external urethral sphincter, causing it to relax and the bladder to empty.

但是在正常情况下，你要排尿的决定阻止了大脑向尿道外括约肌发出信号使得它开始放松，膀胱排空。

The second door is the external sphincter muscle, and it's made of skeletal muscle and is under voluntary control, meaning that it opens and closes when a person wants it to.

第2道阀门是外括约肌，由骨骼肌组成，受意识支配，可以按照人们的意愿开合。

Meanwhile, signals are sent to the brainstem and thalamus, and when these decide the right moment has come, they allow the external anal sphincter to relax - and feces goes, hopefully, into the toilet bowl.

直肠发出的信号同时也发送到了脑干和丘脑；当它们认定“时机成熟”时，便会下达指令使肛门外括约肌松弛；粪便就能——不出意外的话——顺利排入马桶。