<s>[INST] How Does the Urinary Tract Work? [/INST] The role of the urinary tract is to make and store urine. Urine is one of the waste products of your body. Urine is made in the kidneys and travels down the ureters to the bladder. The bladder stores the urine until it is emptied by urinating through the urethra, a tube that connects the bladder to the skin. The opening of the urethra is at the end of the penis in a male and above the vaginal opening in a female.

The kidneys are a pair of fist-sized organs in the back that filter liquid waste from the blood and remove it from the body in the form of urine. Kidneys balance the levels of many chemicals in the body (sodium, potassium, calcium, phosphorous and others) and check the blood's acidity. Certain hormones are also made in the kidneys. These hormones help control blood pressure, boost red blood cell production and help make strong bones.

Normal urine has no bacteria in it, and the one-way flow helps prevent infections. Still, bacteria may get into the urine through the urethra and travel up into the bladder Source: Urology Care Foundation. Link: https://www.urologyhealth.org/urology-a-z/u/urinary-tract-infections-in-adults. Field: Urology. Disease: Urinary Tract Infection  </s>