A more complex explanation of how the bladder works involves the other organs of the urinary system, otherwise known as the renal system. The bladder is connected to the kidneys by two long tubes -- the ureters. The kidneys produce urine and send it down along the ureters to the bladder, which holds it until it receives a signal from the brain that it can release it. It then travels down the tubelike urethra and out of the body.

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