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.

在消化道的些特定部位，例如食管括约肌，内环肌层增厚，形成括约肌，可以防止食物从部位反流至部位。

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

当你想憋尿时，括约肌就会关。

You may also stretch your external sphincter muscles.

你也有可能会撑大你的外括约肌。

It's one of many sphincters on your body.

它是你身体的括约肌之。

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

有两小括约肌何时从膀中释放尿液。

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

在这里，男性尿道括约肌收缩以确保尿液不会与精液混合。

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，这甜品的颜色跟我解剖尸体的食管括约肌样。

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，包括排便和膀能力；这是由于肛门括约肌和膀壁肌肉张力下降引起的，以及性功能下降。

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？

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，所有不能被吸收的物质，如纤维素，将沿消化道继续前进，通过回盲括约肌，进入消化道的最后部分：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括约肌的刺激，使其舒张。

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

般当膀充盈量达到半时，内括约肌会开放。

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，因为进食之后幽门括约肌闭合，而幽门括约肌是分隔胃部和小肠的部分。

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.

在食管裂孔疝中，胃和食管下部通过食管裂孔（这是膈膜中的孔）向滑动（进入胸腔），这降低了食管下括约肌的压力。

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.

我们实际并不能自主这特殊的括约肌，但是自主神经系统会在你不撒尿的时候把它收紧以防止泄漏。

Now, the esophagus has a particularly thick muscularis externa that propels the bolus of food down to the esophageal sphincter , which opens, allowing the bolus to pass into the stomach.

食管的肌层非常厚，这有助于食管将食团推向食管括约肌；食管括约肌适时开放，以便食团进入胃部。

With GERD, the lower esophageal sphincter is weaker than normal, and it allows acid from the stomach to go back up into the esophagus after meals.

GERD患者的食管下括约肌较正常人弱，所以允许胃酸在餐后从胃返流到食管内。

The first door is the internal sphincter muscle, which is made of smooth muscle and is under involuntary control, meaning that it opens and closes automatically.

阀门是内括约肌，由平滑肌组成，不受意识支配，意味着它可以自行开合。