The urine passes down through the ureters and into the bladder.

液顺着输管下进入膀。

It's basically a one way valve that prevents urine from refluxing backwards from the bladder into the ureters.

基本上如同一个单向瓣膜，阻止液从膀进入输管。

From there, it goes down the ureter which has a muscular lining which helps to push urine along.

从起，液经输管（细长肌性管道，可推动液前进）下。

Once the urine leaves the kidneys, it enters the ureters, a pair of slender tubes that drop down to the posterior urinary bladder.

液一旦离开脏，就进入输管，输管是一对细长的管子，一直延伸到后膀。

Grade I, is least severe, and urine only goes up into the ureters.

病情最轻，液仅仅进入输管。

The two " ureters" that pass it along to the bladder...

把它传到膀的两个“输管” . .

Urine collects in the renal pelvis and then heads out of the kidney through the ureter.

液在聚集，然后通过输管排出脏。

He also connects the ureter-the tube that connects the kidney to the bladder-from the pig organ to the human ureter.

他还将猪的输管(连接脏与膀的管道)与人的输管连接起来。

In that situation, as the bladder pressure builds with more urine, it starts to go back up the ureters.

在这种情况下，随着膀内液越积越多，液便开始从膀进入输管；液便开始从膀逆至输管。

As urine flows from the kidney, through the ureters and into the bladder, the bladder starts to expand into the abdomen.

当液从经过输管进入膀时，膀开始扩张而压迫腹腔。

The ureters are two tubes that drain urine from the kidneys to the bladder.

输管是两个将液从脏排到膀的管道。

Rather, like the small intestines, each ureter features a layer of smooth muscle that contracts to move urine using peristalsis.

相反，就像小肠一样，每个输管都有一层平滑肌，该平滑肌通过蠕动收缩以移动液。

In grade III, urine fills and begins to stretch both the ureter and the renal pelvis.

液的充盈开始导致输管和扩张。

In grade II, urine fills the entire ureter and the renal pelvis, the center part of the kidney.

液充满整个输管和，即的心部分。

A rigid tube called a stent can be placed in the ureter to expand it.

可以将称为支架的刚性管放置在输管以扩张输管。

The fluid that leaves the kidneys, known as urine, travels through a tube called the ureter to the bladder.

膀可以储存液，直到其通过道从身体排出。

Each ureter is a muscular tube about 25 cm long.

每个输管是一个大约25厘米长的肌肉管。

A kidney stone is a hard mass of crystals that can form in the kidneys, ureters, bladder, or urethra.

结石是一团坚硬的晶体，可在脏、输管、膀或道形成。

Primary, meaning he had an anatomic abnormality at his ureterovesicle junction, where the ureter connects to the bladder.

" Primary" ：原发性，是输管在与膀的接口处产生异常。

Muscles in the walls of the ureters send the urine in small spurts into the bladder.

管壁上的肌肉将液以小股的形式喷射入膀。