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

最轻，液仅仅进输管。

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

液顺着输管流下进膀胱。

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

液充满整个输管和肾盂，即肾的中心部分。

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肾盂扩张。

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，阻止液从膀胱返流进输管。

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

液在肾盂中聚集，然后过输管排出肾脏。

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

从肾盂起，液经输管（细长肌性管道，可推动液前进）流下。

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

输管是两个将液从肾脏排膀胱的管道。

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

膀胱可以储存液，直过道从身体排出。

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。

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膀胱。

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

" Primary" ：原发性，是输管在与膀胱的接口处产生异常。

The kidneys make urine from a mix of water and the body's waste products, funneling the unwanted fluid into two muscular tubes called ureters.

形成于肾脏里的液由身体里的水分和终末产物合成，废液流两个被称为输管的肌管中。

The ureters enter the bladder diagonally from its dorsolateral floor in an area called the trigone.

输管从膀胱背外侧斜向进膀胱，这一区域称为膀胱三角。

Ultimately the filtrate is turned into urine and is excreted from the kidney through the ureter, into the bladder, and peed away.

最终滤液变成液，过输管从肾脏排出，进膀胱，再出。

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

在这种况下，随着膀胱内液越积越多，液便开始从膀胱进输管；液便开始从膀胱逆流至输管。

Vesicoureteral reflux can be diagnosed with an abdominal ultrasound, which can detect blockages in flow of urine and swelling in the ureters or kidneys.

膀胱输管反流可过腹部超声检查确诊，可检测液流动阻塞，以及输管和肾的肿胀。

This is the entry and exit point for the ureter, renal artery and renal vein, lymphatics, and nerves go into and come out of the kidney.

肾门是输管、肾动脉、肾静脉、淋巴管，以及肾传传出神经的进出之处。

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

当液从肾经过输管进膀胱时，膀胱开始扩张而压迫腹腔。

The scanner then detects the tracer as it moves from the blood and into the kidney and then down through the ureters and into the bladder.

当示踪剂从血液进肾脏时，由扫描仪监测，然后示踪剂会下行经输管进膀胱。