Gets worse as the bladder fills.

The pressure created when the bladder fills with urine is what causes the urge to urinate.

As the bladder fills, muscles in its walls relax so that it can expand.

Once the robot is in position over the weld, an inflatable bladder fills the pipeway, blocking steam.

Normally, the bladder gently fills with urine and you slowly become aware of the need to urinate.

In Parkinson's disease, this can be caused by changes in how your bladder fills and empties.

A baby's bladder fills to a set point, then automatically contracts and empties.

There may be some discomfort as your bladder fills with urine during the examination.