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

尿道内括约肌自然而然的张开，尿就排出来了。

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

人体内共有超过50种不同的括约肌 你能叫出多少？

It's one of many sphincters on your body.

它是你身体上的括约肌之一。

There are two little sphincters that control when to release your urine from the bladder.

有两个小括约肌控制何时从膀胱中释放尿。

Here the male urethral sphincter contracts to make sure urine doesn't mix with semen.

在这里，男性尿道括约肌收缩以确保尿不会精混合。

Sleeping on the right relaxes the lower oesophageal sphincter, allowing the acid to escape.

而右侧睡觉会松弛下食道括约肌，使脱。

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

食管下括约肌的静息压力为10至45毫米汞柱。

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

而且，这甜品的颜色跟我尸体的食管括约肌一样。

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，并使肛门内括约肌松弛。

When you want to delay urinating, you keep the sphincter closed.

当你想憋尿时，括约肌就会关上。

You may also stretch your external sphincter muscles.

你也有可能会撑大你的外括约肌。

Additionally, the lower esophageal sphincter is tightly closed between meals to prevent acid reflux.

另外，食管下括约肌在不进食时会保持强力收缩状态，来防止返流。

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，内括约肌会开放。

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

你居然嘲笑括约肌 括约肌可是人体的一组肌肉 没有的话人类没法存活的哦。

In scleroderma, the muscle of the lower esophageal sphincter is replaced by connective tissue, so it can't contract properly.

在硬皮病中，食管下括约肌被结缔组织替代，不能正常收缩。

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

同时，括约肌内壁开始打开。这叫做排尿反射。

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。

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。

Finally, at the lower esophageal sphincter, the squamous epithelium joins the columnar gastric epithelium to form the gastroesophageal junction.

最后，在食管下括约肌处，食管鳞状上皮移行为柱状上皮，形成了-食管交界区。

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。