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When the bladder is about halfway full, your body tells you to go to the bathroom. When you pee, the urine goes from the bladder down another tube called the urethra (say: yu-REE-thruh) and out of your body. The kidneys, the bladder, and their tubes are called the urinary system. Here's a list of all of the parts of the urinary system: 1  the kidneys: filters that take the waste out of the blood and make urine.  the ureters: tubes that carry the urine from each kidney to the bladder.
The urinary system is divided into upper and lower sections. The upper urinary system is made up of the kidneys and a tube called the ureter, which transports urine from the kidney to the bladder. There is one kidney for each side of the body and each kidney has its own ureter.he function of the urinary system is to remove waste products from the body, regulate water and salt balance, and to store and transport urine. Upper urinary system. Kidneys. The kidneys are a pair of bean-shaped organs located near your back and just below the ribcage.