There are over 50 different sphincters in the human body. How many can you name?

人体内共有超过50种不同的 你能叫出多少？

You may also stretch your external sphincter muscles.

你也有可能会撑大你的外。

You mock the sphincter but the sphincter is a class of muscle without which human beings couldn't survive.

你居然嘲笑 可是人体的一组肉 没有的话人类没法存活的哦。

The internal urethral sphincter automatically and involuntarily opens, and the urine is released.

尿道内自然而然的张开，尿就排出来了。

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强外的收缩力，例如通过做Kegel运动。

Typically, that internal sphincter muscle opens up when the bladder is about half full.

一般当膀胱充盈量达到一半时，内会开放。

The sphincter wants to keep the camera out.

排斥镜头进去。

Great timing. My " Check sphincter" light just went on.

真是时候。我的" 检查菊花" 灯刚好亮了呢。

The lower esophageal sphincter has a resting pressure of 10 to 45 millimeters of mercury.

食管下的静息压力为10至45毫米汞柱。

And it's the same color as my cadaver's esophageal sphincter.

而且，这甜品的颜色跟我解剖尸体的食管一样。

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

通过尿道外附近的骨骼收缩，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。

The pyloric sphincter allows food to pass into the small intestine only after it has been transformed into chyme.

幽门使食物在转化为食糜后才能进入小肠。

Simultaneously, the internal urethral sphincter opens. This is called the micturition reflex.

同时，内壁开始打开。这叫做排尿反射。

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

！快速回顾一下：尿失禁是指尿液不自主地通过内外离开膀胱。

Next there’s stress incontinence which is usually due to increased abdominal pressure that overwhelms the sphincter muscles and allows urine to leak out.

第2种被称为压力性尿失禁，通常由于腹内压高，无法承受高压，从而造成尿液漏出。

These parasympathetic neurons make the rectum contract and the internal anal sphincter relax.

这些副交感神经元可以使直肠收缩，并使肛门内松弛。

This involuntary sphincter is controlled by the autonomic nervous system and keeps the urethra closed when the bladder isn’t full.

这一非随意由自主神经系统控制，能够在膀胱非充盈时保持尿道关闭。

Now, once the stomach is done, doing what stomachs do, the pyloric sphincter opens, allowing the chyme to pass into the small intestine.

当胃部的工作完成后，幽门便会打开，使食糜顺利进入小肠。

The external urethral sphincter is one of the muscles of the pelvic floor, and it provides support to the urethra and bladder neck.

尿道外是一种盆底，它向尿道和膀胱颈提供支撑。