In specific places along the tract, like the esophageal sphincter, the circular layer thickens, forming these sphincters that keep food from passing from one part of the gastrointestinal tract to another.

在消化道的一些特定部位，例如管约肌，内环肌层增厚，形成约肌，可以防从一个部位反流至上一个部位。

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

当你想憋尿时，约肌就会关上。

It's one of many sphincters on your body.

它是你身体上的约肌之一。

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

有两个小约肌控制何时从膀胱中释放尿液。

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

在这里，男性尿道约肌收缩以确保尿液不会与精液混合。

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

而右侧睡会松弛下道约肌，使胃酸逃脱。

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

管下约肌的静息压力为10至45毫米汞柱。

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

而且，这甜品的颜色跟我解剖尸体的管约肌一样。

The force of the traction of these magnetic beads coming together helps keep the weak lower esophageal sphincter or valve closed at the end of the esophagus, he stated.

这些磁珠的牵引力一起作用帮助孱弱的道下端约肌或阀们紧闭道, 他说道。

Symptoms of cauda equina include decreased bowel and bladder control due to a decreased tone of anal sphincters and muscle wall of the bladder and decreased sexual function.

马尾神经综合征的症状，包和膀胱控制能力；这是由于肛门约肌和膀胱壁肌肉张力下降引起的，以及性功能下降。

The good news is you're more likely to just lose control of your muscles and pee way before your bladder hits this point.

好消息是，膀胱出现上述问题的可能性还是比较小的。大多数情况下你只是会失去对外约肌的控制然后尿出来而已。

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

人体内共有超过50种不同的约肌 你能叫出多少？

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

你居然嘲笑约肌 约肌可是人体的一组肌肉 没有的话人类没法存活的哦。

All right, so whatever isn't absorbed, like fiber, continues its journey onward through the ileocecal sphincter and into the very last part of the gastrointestinal tract: the large intestine, also known as colon.

那么，所有不能被吸收的质，如纤维素，将沿消化道继续前进，通过回盲约肌，进入消化道的最后一部分：大肠，也称之为结肠。

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约肌的刺激，使其舒张。

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，内约肌会开放。

The contents of the stomach impact alcohol's ability to get into the blood because after eating, the pyloric sphincter, which separates the stomach from the small intestine, closes.

胃里的东西会影响酒精进入血液的能力，因为进之后幽门约肌闭合，而幽门约肌是分隔胃部和小肠的部分。

For example, with less overall control, you risk leaking urine when your bladder is full and not emptying it all the way when you finally do go.

比如说，没法完全的控制外约肌可能会在膀胱较满时出现漏尿的情况，还有可能出现你在尿的时候无法净的情况。

In hiatal hernia, the stomach and lower part of the esophagus slide up through the esophageal hiatus, which is an orifice in the diaphragm, and this decreases the pressure of the lower esophageal sphincter.

在管裂孔疝中，胃和管下部通过管裂孔（这是膈膜中的一个孔）向上滑动（进入胸腔），这降低了管下约肌的压力。

Now we don't actually have voluntary control over this particular sphincter, but the autonomic nervous system keeps it cinched up whenever you're not peeing to prevent leakage.

我们实际上并不能自主控制这个特殊的约肌，但是自主神经系统会在你不撒尿的时候把它收紧以防泄漏。