The urinary tract includes the kidneys, the bladder and the urethra. The kidneys are 2 bean-shaped organs that lie against the spine in the lower back.
Blood flows through the kidneys.
Waste products from the blood are removed in the kidneys and stored in the bladder as urine. The bladder is the balloon-shaped organ that stores the urine. The urethra is the tube that carries urine from the bladder outside the body. Wearing tight-fitting clothing Holding urine for a long time Girls wiping from back to front, instead of front to back after a bowel movement Some children have a condition that keeps their bladder from emptying all the way. These children may have UTIs often.