Final answer:
The last structure of the urinary system through which urine exits the body is the urethra.
Step-by-step explanation:
The last structure of the urinary system is the urethra. This is the final part of the pathway that urine takes as it is eliminated from the body. The urinary system includes the kidneys, which filter waste from the blood and create urine. Following this, urine moves through the ureters and then is stored in the urinary bladder until the body is ready for urination. Eventually, urine passes through the urethra and exits the body.
After urine forms in the kidneys, it passes through the ureters to the urinary bladder, which functions as a storage organ. When it is time to urinate, the urine is released from the bladder and transported through the urethra to be excreted outside the body through the external urethral opening.