It's one of many sphincters on your body.

它是你身体上的括肌之一。

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

你居然嘲笑括肌 括肌可是人体的一组肌肉 没有的话人类没法存的哦。

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

有两个小括肌控制何时从膀胱中释放尿液。

Both relax during swallowing to allow the passage of food or liquids.

上述两个括肌依次松弛，以吞咽食物或液体。

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

而右侧松弛下食道括肌，使胃酸逃脱。

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

人体内共有超过50种不同的括肌 你能叫出多少？

You may also stretch your external sphincter muscles.

你也有可能撑你的外括肌。

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，内括肌开放。

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

在这里，男性尿道括肌收缩以确保尿液不与精液混合。

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括肌一样。

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

通过尿道外括肌附近的骨骼肌收缩，排尿过程可以受意识支配而停止。

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

另外，食管下括肌在不进食时保持强力收缩状态，来防止胃酸返流。

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

尿道内括肌自然而然的张开，尿就排出来了。

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

食管下括肌的静息压力为10至45毫米汞柱。

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，并使肛门内括肌松弛。

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肌的刺激，使其舒张。

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

当你想憋尿时，括肌就关上。

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肌的收缩力，例如通过做Kegel运动。

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，括肌内壁开始打开。这叫做排尿反射。